Best 240-Volt Heat Pump Water Heaters (2026)

240-volt integrated heat pump water heaters compared on official ENERGY STAR certified ratings. Uniform energy factor (UEF) is the current official efficiency number; first-hour rating is the certified gallons available in the first hour. Certified storage volume can be lower than the marketed tank size (for example a unit sold as 50 gallons may certify at 45 or 46 gallons). This table is limited to 240-volt integrated models. 120-volt integrated units have their own comparison, because they use a different circuit and often certify at a lower first-hour rating. Split-system heat pump water heaters such as SANCO2 tank-plus-outdoor-unit combinations appear on the ENERGY STAR list but are not ranked here, because mixing a split system with an integrated tank would make installation type dominate the story we can tell from these fields.

Updated 2026-11-1347 products compared4 scored criteriaHow this ranking works

Affiliate disclosure: We earn a commission if you buy through links on this page, at no extra cost to you. It never affects our rankings, which come from the published scoring formula. As an Amazon Associate I earn from qualifying purchases. Learn more.

Top pick

GE Profile PH80S10BNY01

Score 9.9/10 · Check price

Why it wins: Official UEF 4.5, first-hour rating 101 gallons, 80 gallons certified storage, ENERGY STAR connected-capable. Highest official uniform energy factor in this comparison (4.5). Highest official first-hour rating in this comparison (101 gallons).

Also great: A. O. Smith CAHP-80 (7.9) · GE Profile PH65S10BNY01 (7.9)

9.9/10

Check price at Amazon See pros, cons & specs

Side-by-side comparison

Swipe sideways on mobile. Green marks the best figure in each column.

Product	Score	Uniform energy factor	First-hour rating	Certified storage volume	Connected capable	Best for	Price	Buy
1 GP GE Profile PH80S10BNY01	9.9/10	4.5	101 gallons	80 gallons	Yes	Official UEF 4.5, first-hour rating 101 gallons, 80 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
2 AO A. O. Smith CAHP-80	7.9/10	3.88	95 gallons	81 gallons	Yes	Official UEF 3.88, first-hour rating 95 gallons, 81 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
3 GP GE Profile PH65S10BNY01	7.9/10	4.3	86 gallons	65 gallons	Yes	Official UEF 4.3, first-hour rating 86 gallons, 65 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
4 A Ariston ARIHPWH-80-T	7.8/10	4.1	88 gallons	74 gallons	Yes	Official UEF 4.1, first-hour rating 88 gallons, 74 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
5 L Lennox WHHP080T45MD240S	7.8/10	4.1	88 gallons	74 gallons	Yes	Official UEF 4.1, first-hour rating 88 gallons, 74 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
6 A ACIQ ACIQ-80G-HP-WH	7.7/10	4	91 gallons	74 gallons	Yes	Official UEF 4, first-hour rating 91 gallons, 74 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
7 B Bosch TR7000T - 80US	7.7/10	4	91 gallons	74 gallons	Yes	Official UEF 4, first-hour rating 91 gallons, 74 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
8 M Midea MAHW-80VN3B	7.7/10	4	91 gallons	75 gallons	Yes	Official UEF 4, first-hour rating 91 gallons, 75 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
9 R Rinnai REHP80W	7.7/10	4	91 gallons	75 gallons	Yes	Official UEF 4, first-hour rating 91 gallons, 75 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
10 AS American Standard ASHPWH-80	7.4/10	4.01	87 gallons	73 gallons	Yes	Official UEF 4.01, first-hour rating 87 gallons, 73 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
11 GP GE Profile PH50S10BNY01	7.2/10	4.5	75 gallons	50 gallons	Yes	Official UEF 4.5, first-hour rating 75 gallons, 50 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
12 GP GE Profile PH50S10BPY01	6.7/10	4.3	77 gallons	50 gallons	Yes	Official UEF 4.3, first-hour rating 77 gallons, 50 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
13 AO A. O. Smith CAHP-66	6.5/10	3.84	83 gallons	68 gallons	Yes	Official UEF 3.84, first-hour rating 83 gallons, 68 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
14 L Lennox WHHP065T45MD240S	6.5/10	4.05	77 gallons	61 gallons	Yes	Official UEF 4.05, first-hour rating 77 gallons, 61 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
15 M Midea MAHW-65VN3B	6.5/10	4	80 gallons	61 gallons	Yes	Official UEF 4, first-hour rating 80 gallons, 61 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
16 R Rinnai REHP65W	6.5/10	4	80 gallons	61 gallons	Yes	Official UEF 4, first-hour rating 80 gallons, 61 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
17 B Bosch TR7000T-65US	6.2/10	3.9	80 gallons	60 gallons	Yes	Official UEF 3.9, first-hour rating 80 gallons, 60 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
18 S Senville SENWH-HP65US	6.2/10	3.9	80 gallons	60 gallons	Yes	Official UEF 3.9, first-hour rating 80 gallons, 60 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
19 R Rheem PRO H80 T2 RH310UM	6.0/10	3.5	87 gallons	72 gallons	Yes	Official UEF 3.5, first-hour rating 87 gallons, 72 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
20 N Noritz NHP-80-240	5.9/10	4.24	82 gallons	71 gallons	No	Official UEF 4.24, first-hour rating 82 gallons, 71 gallons certified storage	Check price	View deal
21 BW Bradford White RE2HP80-1NCTT	5.8/10	4	88 gallons	75 gallons	No	Official UEF 4, first-hour rating 88 gallons, 75 gallons certified storage	Check price	View deal
22 L LG APHWC801M	5.7/10	3.9	94 gallons	72 gallons	No	Official UEF 3.9, first-hour rating 94 gallons, 72 gallons certified storage	Check price	View deal
23 BW Bradford White RE2HP65-1NCTT	5.5/10	4.2	82 gallons	65 gallons	No	Official UEF 4.2, first-hour rating 82 gallons, 65 gallons certified storage	Check price	View deal
24 GP GE Profile PH40S10BPY01	5.3/10	4.2	64 gallons	40 gallons	Yes	Official UEF 4.2, first-hour rating 64 gallons, 40 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
25 L LG APHWC502M	5.0/10	4.2	81 gallons	53 gallons	No	Official UEF 4.2, first-hour rating 81 gallons, 53 gallons certified storage	Check price	View deal
26 A Ariston ARIHPWH-50-T	4.7/10	3.83	69 gallons	45 gallons	Yes	Official UEF 3.83, first-hour rating 69 gallons, 45 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
27 L Lennox WHHP050T45MD240S	4.7/10	3.83	69 gallons	45 gallons	Yes	Official UEF 3.83, first-hour rating 69 gallons, 45 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
28 M Midea MAHW-50VN3B	4.7/10	3.75	71 gallons	46 gallons	Yes	Official UEF 3.75, first-hour rating 71 gallons, 46 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
29 R Rheem PRO H65 T2 RH310UM	4.7/10	3.5	75 gallons	59 gallons	Yes	Official UEF 3.5, first-hour rating 75 gallons, 59 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
30 R Rinnai REHP50W	4.7/10	3.75	71 gallons	46 gallons	Yes	Official UEF 3.75, first-hour rating 71 gallons, 46 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
31 A ACIQ ACIQ-50G-HP-WH	4.6/10	3.75	69 gallons	47 gallons	Yes	Official UEF 3.75, first-hour rating 69 gallons, 47 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
32 B Bosch TR7000T - 50US	4.6/10	3.75	69 gallons	47 gallons	Yes	Official UEF 3.75, first-hour rating 69 gallons, 47 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
33 S Senville SENWH-HP50US	4.6/10	3.75	69 gallons	47 gallons	Yes	Official UEF 3.75, first-hour rating 69 gallons, 47 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
34 AO A. O. Smith HPTS-50	4.5/10	3.8	65 gallons	46 gallons	Yes	Official UEF 3.8, first-hour rating 65 gallons, 46 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
35 AS American Standard ASHPWH-50	4.5/10	3.75	68 gallons	45 gallons	Yes	Official UEF 3.75, first-hour rating 68 gallons, 45 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
36 G GREE GRS-3.0Pd/TD50GANhA-D	4.5/10	4.02	80 gallons	55 gallons	No	Official UEF 4.02, first-hour rating 80 gallons, 55 gallons certified storage	Check price	View deal
37 AO A. O. Smith CAHP-50	4.1/10	3.68	65 gallons	46 gallons	Yes	Official UEF 3.68, first-hour rating 65 gallons, 46 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
38 S State CSHP-50	4.1/10	3.68	65 gallons	46 gallons	Yes	Official UEF 3.68, first-hour rating 65 gallons, 46 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
39 V Vaughn ME80HPT	4.1/10	3.48	86 gallons	74 gallons	No	Official UEF 3.48, first-hour rating 86 gallons, 74 gallons certified storage	Check price	View deal
40 R Rheem PRO H50 T2 RH310UM	3.7/10	3.5	67 gallons	45 gallons	Yes	Official UEF 3.5, first-hour rating 67 gallons, 45 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
41 AO A. O. Smith CAHP-40	2.9/10	3.6	55 gallons	36 gallons	Yes	Official UEF 3.6, first-hour rating 55 gallons, 36 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
42 BW Bradford White RE2HP50-1NCTT	2.9/10	3.89	65 gallons	45 gallons	No	Official UEF 3.89, first-hour rating 65 gallons, 45 gallons certified storage	Check price	View deal
43 N Noritz NHP-50-240	2.9/10	3.85	68 gallons	45 gallons	No	Official UEF 3.85, first-hour rating 68 gallons, 45 gallons certified storage	Check price	View deal
44 R Rheem PRO H40 T2 RH310UM	2.9/10	3.5	60 gallons	36 gallons	Yes	Official UEF 3.5, first-hour rating 60 gallons, 36 gallons certified storage, ENERGY STAR connected-capable	Check price	View deal
45 R Rheem PRO H50 T2 RH310BM	1.9/10	3.5	67 gallons	45 gallons	No	Official UEF 3.5, first-hour rating 67 gallons, 45 gallons certified storage	Check price	View deal
46 AO A. O. Smith FPTU-50	1.5/10	3.35	66 gallons	46 gallons	No	Official UEF 3.35, first-hour rating 66 gallons, 46 gallons certified storage	Check price	View deal
47 V Vaughn ME50HPT	1.3/10	3.46	58 gallons	47 gallons	No	Official UEF 3.46, first-hour rating 58 gallons, 47 gallons certified storage	Check price	View deal

"Not listed" means the official ENERGY STAR, DOE or manufacturer record we used does not publish that figure. Prices show "Check price" until a retailer feed provides a current price.

Every 240-volt heat pump water heater, ranked

#1 · Top pick

GE Profile PH80S10BNY01

Best for: Official UEF 4.5, first-hour rating 101 gallons, 80 gallons certified storage, ENERGY STAR connected-capable

9.9/10

What we like

Highest official uniform energy factor in this comparison (4.5)
Highest official first-hour rating in this comparison (101 gallons)
ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4.5
First-hour rating	101 gallons
Certified storage volume	80 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	4.5
First-hour rating (ENERGY STAR)	101 gallons
Certified storage volume (ENERGY STAR)	80 gallons
Annual energy use (ENERGY STAR)	1102 kWh/year
Annual energy use per gallon (computed)	13.8 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	23.0 A
Lower compressor cut-off temperature (ENERGY STAR)	35.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	494%
Sound pressure level (ENERGY STAR)	41 dB
Tank height (ENERGY STAR)	57.2 in
Tank diameter (ENERGY STAR)	21.5 in
Refrigerant (ENERGY STAR)	R1234YF
Certified model number	PH80S10BNY01
Official brand name on the ENERGY STAR record	GE Profile
Price	Check price

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Specs sources:

A. O. Smith CAHP-80

Best for: Official UEF 3.88, first-hour rating 95 gallons, 81 gallons certified storage, ENERGY STAR connected-capable

7.9/10

What we like

High official first-hour rating (95 gallons)
Largest official certified storage volume in this comparison (81 gallons)
ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.88
First-hour rating	95 gallons
Certified storage volume	81 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.88
First-hour rating (ENERGY STAR)	95 gallons
Certified storage volume (ENERGY STAR)	81 gallons
Annual energy use (ENERGY STAR)	1279 kWh/year
Annual energy use per gallon (computed)	15.8 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	22.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	428%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	69 in
Tank diameter (ENERGY STAR)	27 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	CAHP-80 2**
Official brand name on the ENERGY STAR record	A. O. Smith
Price	Check price

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Specs sources:

GE Profile PH65S10BNY01

Best for: Official UEF 4.3, first-hour rating 86 gallons, 65 gallons certified storage, ENERGY STAR connected-capable

7.9/10

What we like

Official uniform energy factor of 4.3
ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4.3
First-hour rating	86 gallons
Certified storage volume	65 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	4.3
First-hour rating (ENERGY STAR)	86 gallons
Certified storage volume (ENERGY STAR)	65 gallons
Annual energy use (ENERGY STAR)	1154 kWh/year
Annual energy use per gallon (computed)	17.8 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	23.0 A
Lower compressor cut-off temperature (ENERGY STAR)	35.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	471%
Sound pressure level (ENERGY STAR)	41 dB
Tank height (ENERGY STAR)	47.5 in
Tank diameter (ENERGY STAR)	21.5 in
Refrigerant (ENERGY STAR)	R1234YF
Certified model number	PH65S10BNY01
Official brand name on the ENERGY STAR record	GE Profile
Price	Check price

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Specs sources:

Ariston ARIHPWH-80-T

Best for: Official UEF 4.1, first-hour rating 88 gallons, 74 gallons certified storage, ENERGY STAR connected-capable

7.8/10

What we like

Official uniform energy factor of 4.1
ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4.1
First-hour rating	88 gallons
Certified storage volume	74 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	4.1
First-hour rating (ENERGY STAR)	88 gallons
Certified storage volume (ENERGY STAR)	74 gallons
Annual energy use (ENERGY STAR)	1210 kWh/year
Annual energy use per gallon (computed)	16.4 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	21.0 A
Lower compressor cut-off temperature (ENERGY STAR)	35.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	474%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	59.8 in
Tank diameter (ENERGY STAR)	20.2 in
Refrigerant (ENERGY STAR)	R-513A
Certified model number	ARIHPWH-80-T
Official brand name on the ENERGY STAR record	Ariston
Price	Check price

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Specs sources:

Lennox WHHP080T45MD240S

Best for: Official UEF 4.1, first-hour rating 88 gallons, 74 gallons certified storage, ENERGY STAR connected-capable

7.8/10

What we like

Official uniform energy factor of 4.1
ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4.1
First-hour rating	88 gallons
Certified storage volume	74 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	4.1
First-hour rating (ENERGY STAR)	88 gallons
Certified storage volume (ENERGY STAR)	74 gallons
Annual energy use (ENERGY STAR)	1210 kWh/year
Annual energy use per gallon (computed)	16.4 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	21.0 A
Lower compressor cut-off temperature (ENERGY STAR)	35.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	474%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	59.8 in
Tank diameter (ENERGY STAR)	20.2 in
Refrigerant (ENERGY STAR)	R-513A
Certified model number	WHHP080T45MD240S****
Official brand name on the ENERGY STAR record	Lennox
Price	Check price

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Specs sources:

ACIQ ACIQ-80G-HP-WH

Best for: Official UEF 4, first-hour rating 91 gallons, 74 gallons certified storage, ENERGY STAR connected-capable

7.7/10

What we like

Official uniform energy factor of 4
High official first-hour rating (91 gallons)
ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4
First-hour rating	91 gallons
Certified storage volume	74 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	4
First-hour rating (ENERGY STAR)	91 gallons
Certified storage volume (ENERGY STAR)	74 gallons
Annual energy use (ENERGY STAR)	1240 kWh/year
Annual energy use per gallon (computed)	16.8 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	24.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.4 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	450%
Sound pressure level (ENERGY STAR)	49 dB
Tank height (ENERGY STAR)	41.7 in
Tank diameter (ENERGY STAR)	21.8 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	ACIQ-80G-HP-WH
Official brand name on the ENERGY STAR record	ACIQ
Price	Check price

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Specs sources:

Bosch TR7000T - 80US

Best for: Official UEF 4, first-hour rating 91 gallons, 74 gallons certified storage, ENERGY STAR connected-capable

7.7/10

What we like

Official uniform energy factor of 4
High official first-hour rating (91 gallons)
ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4
First-hour rating	91 gallons
Certified storage volume	74 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	4
First-hour rating (ENERGY STAR)	91 gallons
Certified storage volume (ENERGY STAR)	74 gallons
Annual energy use (ENERGY STAR)	1240 kWh/year
Annual energy use per gallon (computed)	16.8 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	24.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.4 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	450%
Sound pressure level (ENERGY STAR)	49 dB
Tank height (ENERGY STAR)	41.7 in
Tank diameter (ENERGY STAR)	21.8 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	TR7000T - 80US
Official brand name on the ENERGY STAR record	Bosch
Price	Check price

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Specs sources:

Midea MAHW-80VN3B

Best for: Official UEF 4, first-hour rating 91 gallons, 75 gallons certified storage, ENERGY STAR connected-capable

7.7/10

What we like

Official uniform energy factor of 4
High official first-hour rating (91 gallons)
ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4
First-hour rating	91 gallons
Certified storage volume	75 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	4
First-hour rating (ENERGY STAR)	91 gallons
Certified storage volume (ENERGY STAR)	75 gallons
Annual energy use (ENERGY STAR)	1230 kWh/year
Annual energy use per gallon (computed)	16.4 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	24.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.4 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	450%
Sound pressure level (ENERGY STAR)	49 dB
Tank height (ENERGY STAR)	41.7 in
Tank diameter (ENERGY STAR)	21.8 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	MAHW-80VN3B
Official brand name on the ENERGY STAR record	Midea
Price	Check price

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Specs sources:

Rinnai REHP80W

Best for: Official UEF 4, first-hour rating 91 gallons, 75 gallons certified storage, ENERGY STAR connected-capable

7.7/10

What we like

Official uniform energy factor of 4
High official first-hour rating (91 gallons)
ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4
First-hour rating	91 gallons
Certified storage volume	75 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	4
First-hour rating (ENERGY STAR)	91 gallons
Certified storage volume (ENERGY STAR)	75 gallons
Annual energy use (ENERGY STAR)	1230 kWh/year
Annual energy use per gallon (computed)	16.4 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	24.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.4 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	450%
Sound pressure level (ENERGY STAR)	49 dB
Tank height (ENERGY STAR)	41.7 in
Tank diameter (ENERGY STAR)	21.8 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	REHP80W
Official brand name on the ENERGY STAR record	Rinnai
Price	Check price

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Specs sources:

#10

American Standard ASHPWH-80

Best for: Official UEF 4.01, first-hour rating 87 gallons, 73 gallons certified storage, ENERGY STAR connected-capable

7.4/10

What we like

Official uniform energy factor of 4.01
ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4.01
First-hour rating	87 gallons
Certified storage volume	73 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	4.01
First-hour rating (ENERGY STAR)	87 gallons
Certified storage volume (ENERGY STAR)	73 gallons
Annual energy use (ENERGY STAR)	1238 kWh/year
Annual energy use per gallon (computed)	17.0 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	21.0 A
Lower compressor cut-off temperature (ENERGY STAR)	35.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	443%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	59.1 in
Tank diameter (ENERGY STAR)	20.2 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	ASHPWH-80*****
Official brand name on the ENERGY STAR record	AMERICAN STANDARD WATER HEATERS
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#11

GE Profile PH50S10BNY01

Best for: Official UEF 4.5, first-hour rating 75 gallons, 50 gallons certified storage, ENERGY STAR connected-capable

7.2/10

What we like

Highest official uniform energy factor in this comparison (4.5)
ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4.5
First-hour rating	75 gallons
Certified storage volume	50 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	4.5
First-hour rating (ENERGY STAR)	75 gallons
Certified storage volume (ENERGY STAR)	50 gallons
Annual energy use (ENERGY STAR)	1102 kWh/year
Annual energy use per gallon (computed)	22.0 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	23.0 A
Lower compressor cut-off temperature (ENERGY STAR)	35.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	491%
Sound pressure level (ENERGY STAR)	41 dB
Tank height (ENERGY STAR)	48.1 in
Tank diameter (ENERGY STAR)	18.5 in
Refrigerant (ENERGY STAR)	R1234YF
Certified model number	PH50S10BNY01
Official brand name on the ENERGY STAR record	GE Profile
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#12

GE Profile PH50S10BPY01

Best for: Official UEF 4.3, first-hour rating 77 gallons, 50 gallons certified storage, ENERGY STAR connected-capable

6.7/10

What we like

Official uniform energy factor of 4.3
ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4.3
First-hour rating	77 gallons
Certified storage volume	50 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	4.3
First-hour rating (ENERGY STAR)	77 gallons
Certified storage volume (ENERGY STAR)	50 gallons
Annual energy use (ENERGY STAR)	1154 kWh/year
Annual energy use per gallon (computed)	23.1 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	23.0 A
Lower compressor cut-off temperature (ENERGY STAR)	35.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	472%
Sound pressure level (ENERGY STAR)	41 dB
Tank height (ENERGY STAR)	48.1 in
Tank diameter (ENERGY STAR)	18.5 in
Refrigerant (ENERGY STAR)	R1234YF
Certified model number	PH50S10BPY01
Official brand name on the ENERGY STAR record	GE Profile
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#13

A. O. Smith CAHP-66

Best for: Official UEF 3.84, first-hour rating 83 gallons, 68 gallons certified storage, ENERGY STAR connected-capable

6.5/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.84
First-hour rating	83 gallons
Certified storage volume	68 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.84
First-hour rating (ENERGY STAR)	83 gallons
Certified storage volume (ENERGY STAR)	68 gallons
Annual energy use (ENERGY STAR)	1292 kWh/year
Annual energy use per gallon (computed)	19.0 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	22.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	435%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	61 in
Tank diameter (ENERGY STAR)	23 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	CAHP-66 2**
Official brand name on the ENERGY STAR record	A. O. Smith
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Specs sources:

#14

Lennox WHHP065T45MD240S

Best for: Official UEF 4.05, first-hour rating 77 gallons, 61 gallons certified storage, ENERGY STAR connected-capable

6.5/10

What we like

Official uniform energy factor of 4.05
ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4.05
First-hour rating	77 gallons
Certified storage volume	61 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	4.05
First-hour rating (ENERGY STAR)	77 gallons
Certified storage volume (ENERGY STAR)	61 gallons
Annual energy use (ENERGY STAR)	1225 kWh/year
Annual energy use per gallon (computed)	20.1 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	21.0 A
Lower compressor cut-off temperature (ENERGY STAR)	35.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	446%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	50.5 in
Tank diameter (ENERGY STAR)	20.2 in
Refrigerant (ENERGY STAR)	R-513A
Certified model number	WHHP065T45MD240S****
Official brand name on the ENERGY STAR record	Lennox
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Specs sources:

#15

Midea MAHW-65VN3B

Best for: Official UEF 4, first-hour rating 80 gallons, 61 gallons certified storage, ENERGY STAR connected-capable

6.5/10

What we like

Official uniform energy factor of 4
ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4
First-hour rating	80 gallons
Certified storage volume	61 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	4
First-hour rating (ENERGY STAR)	80 gallons
Certified storage volume (ENERGY STAR)	61 gallons
Annual energy use (ENERGY STAR)	1234 kWh/year
Annual energy use per gallon (computed)	20.2 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	24.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.4 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	450%
Sound pressure level (ENERGY STAR)	49 dB
Tank height (ENERGY STAR)	45.5 in
Tank diameter (ENERGY STAR)	21.8 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	MAHW-65VN3B
Official brand name on the ENERGY STAR record	Midea
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Specs sources:

#16

Rinnai REHP65W

Best for: Official UEF 4, first-hour rating 80 gallons, 61 gallons certified storage, ENERGY STAR connected-capable

6.5/10

What we like

Official uniform energy factor of 4
ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4
First-hour rating	80 gallons
Certified storage volume	61 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	4
First-hour rating (ENERGY STAR)	80 gallons
Certified storage volume (ENERGY STAR)	61 gallons
Annual energy use (ENERGY STAR)	1234 kWh/year
Annual energy use per gallon (computed)	20.2 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	24.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.4 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	450%
Sound pressure level (ENERGY STAR)	49 dB
Tank height (ENERGY STAR)	45.5 in
Tank diameter (ENERGY STAR)	21.8 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	REHP65W*
Official brand name on the ENERGY STAR record	Rinnai
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Specs sources:

#17

Bosch TR7000T-65US

Best for: Official UEF 3.9, first-hour rating 80 gallons, 60 gallons certified storage, ENERGY STAR connected-capable

6.2/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.9
First-hour rating	80 gallons
Certified storage volume	60 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.9
First-hour rating (ENERGY STAR)	80 gallons
Certified storage volume (ENERGY STAR)	60 gallons
Annual energy use (ENERGY STAR)	1240 kWh/year
Annual energy use per gallon (computed)	20.7 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	24.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.4 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	450%
Sound pressure level (ENERGY STAR)	49 dB
Tank height (ENERGY STAR)	45.5 in
Tank diameter (ENERGY STAR)	21.8 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	TR7000T-65US
Official brand name on the ENERGY STAR record	Bosch
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Specs sources:

#18

Senville SENWH-HP65US

Best for: Official UEF 3.9, first-hour rating 80 gallons, 60 gallons certified storage, ENERGY STAR connected-capable

6.2/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.9
First-hour rating	80 gallons
Certified storage volume	60 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.9
First-hour rating (ENERGY STAR)	80 gallons
Certified storage volume (ENERGY STAR)	60 gallons
Annual energy use (ENERGY STAR)	1240 kWh/year
Annual energy use per gallon (computed)	20.7 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	24.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.4 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	450%
Sound pressure level (ENERGY STAR)	49 dB
Tank height (ENERGY STAR)	45.5 in
Tank diameter (ENERGY STAR)	21.8 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	SENWH-HP65US
Official brand name on the ENERGY STAR record	Senville
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Specs sources:

#19

Rheem PRO H80 T2 RH310UM

Best for: Official UEF 3.5, first-hour rating 87 gallons, 72 gallons certified storage, ENERGY STAR connected-capable

6.0/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

Official uniform energy factor of 3.5 is at the low end of this set

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.5
First-hour rating	87 gallons
Certified storage volume	72 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.5
First-hour rating (ENERGY STAR)	87 gallons
Certified storage volume (ENERGY STAR)	72 gallons
Annual energy use (ENERGY STAR)	1303 kWh/year
Annual energy use per gallon (computed)	18.1 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	21.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	398%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	74.2 in
Tank diameter (ENERGY STAR)	24.3 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	PRO H80 T2 RH310UM
Official brand name on the ENERGY STAR record	Rheem
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Specs sources:

#20

Noritz NHP-80-240

Best for: Official UEF 4.24, first-hour rating 82 gallons, 71 gallons certified storage

5.9/10

What we like

Official uniform energy factor of 4.24

Watch out for

ENERGY STAR does not list this model as connected-capable

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4.24
First-hour rating	82 gallons
Certified storage volume	71 gallons
Connected capable	No
Uniform energy factor (ENERGY STAR UEF)	4.24
First-hour rating (ENERGY STAR)	82 gallons
Certified storage volume (ENERGY STAR)	71 gallons
Annual energy use (ENERGY STAR)	1148 kWh/year
Annual energy use per gallon (computed)	16.2 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	No
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	21.3 A
Lower compressor cut-off temperature (ENERGY STAR)	23.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	486%
Sound pressure level (ENERGY STAR)	48 dB
Tank height (ENERGY STAR)	72 in
Tank diameter (ENERGY STAR)	25.2 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	NHP-80-240
Official brand name on the ENERGY STAR record	Noritz
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Specs sources:

#21

Bradford White RE2HP80-1NCTT

Best for: Official UEF 4, first-hour rating 88 gallons, 75 gallons certified storage

5.8/10

What we like

Official uniform energy factor of 4

Watch out for

ENERGY STAR does not list this model as connected-capable

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4
First-hour rating	88 gallons
Certified storage volume	75 gallons
Connected capable	No
Uniform energy factor (ENERGY STAR UEF)	4
First-hour rating (ENERGY STAR)	88 gallons
Certified storage volume (ENERGY STAR)	75 gallons
Annual energy use (ENERGY STAR)	1240 kWh/year
Annual energy use per gallon (computed)	16.5 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	No
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	19.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	448%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	51.1 in
Tank diameter (ENERGY STAR)	22 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	RE2HP80**-1NCTT
Official brand name on the ENERGY STAR record	Bradford White
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Specs sources:

#22

LG APHWC801M

Best for: Official UEF 3.9, first-hour rating 94 gallons, 72 gallons certified storage

5.7/10

What we like

High official first-hour rating (94 gallons)

Watch out for

ENERGY STAR does not list this model as connected-capable

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.9
First-hour rating	94 gallons
Certified storage volume	72 gallons
Connected capable	No
Uniform energy factor (ENERGY STAR UEF)	3.9
First-hour rating (ENERGY STAR)	94 gallons
Certified storage volume (ENERGY STAR)	72 gallons
Annual energy use (ENERGY STAR)	1272 kWh/year
Annual energy use per gallon (computed)	17.7 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	No
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	24.0 A
Lower compressor cut-off temperature (ENERGY STAR)	23.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	410%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	62.7 in
Tank diameter (ENERGY STAR)	19.7 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	APHWC801M
Official brand name on the ENERGY STAR record	LG
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Specs sources:

#23

Bradford White RE2HP65-1NCTT

Best for: Official UEF 4.2, first-hour rating 82 gallons, 65 gallons certified storage

5.5/10

What we like

Official uniform energy factor of 4.2

Watch out for

ENERGY STAR does not list this model as connected-capable

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4.2
First-hour rating	82 gallons
Certified storage volume	65 gallons
Connected capable	No
Uniform energy factor (ENERGY STAR UEF)	4.2
First-hour rating (ENERGY STAR)	82 gallons
Certified storage volume (ENERGY STAR)	65 gallons
Annual energy use (ENERGY STAR)	1181 kWh/year
Annual energy use per gallon (computed)	18.2 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	No
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	19.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	462%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	44.6 in
Tank diameter (ENERGY STAR)	22 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	RE2HP65**-1NCTT
Official brand name on the ENERGY STAR record	Bradford White
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Specs sources:

#24

GE Profile PH40S10BPY01

Best for: Official UEF 4.2, first-hour rating 64 gallons, 40 gallons certified storage, ENERGY STAR connected-capable

5.3/10

What we like

Official uniform energy factor of 4.2
ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4.2
First-hour rating	64 gallons
Certified storage volume	40 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	4.2
First-hour rating (ENERGY STAR)	64 gallons
Certified storage volume (ENERGY STAR)	40 gallons
Annual energy use (ENERGY STAR)	773 kWh/year
Annual energy use per gallon (computed)	19.3 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	23.0 A
Lower compressor cut-off temperature (ENERGY STAR)	35.0 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	499%
Sound pressure level (ENERGY STAR)	41 dB
Tank height (ENERGY STAR)	39.4 in
Tank diameter (ENERGY STAR)	18.5 in
Refrigerant (ENERGY STAR)	R1234YF
Certified model number	PH40S10BPY01
Official brand name on the ENERGY STAR record	GE Profile
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Specs sources:

#25

LG APHWC502M

Best for: Official UEF 4.2, first-hour rating 81 gallons, 53 gallons certified storage

5.0/10

What we like

Official uniform energy factor of 4.2

Watch out for

ENERGY STAR does not list this model as connected-capable

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4.2
First-hour rating	81 gallons
Certified storage volume	53 gallons
Connected capable	No
Uniform energy factor (ENERGY STAR UEF)	4.2
First-hour rating (ENERGY STAR)	81 gallons
Certified storage volume (ENERGY STAR)	53 gallons
Annual energy use (ENERGY STAR)	1181 kWh/year
Annual energy use per gallon (computed)	22.3 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	No
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	24.0 A
Lower compressor cut-off temperature (ENERGY STAR)	23.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	440%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	47.6 in
Tank diameter (ENERGY STAR)	19.7 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	APHWC502M
Official brand name on the ENERGY STAR record	LG
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Specs sources:

#26

Ariston ARIHPWH-50-T

Best for: Official UEF 3.83, first-hour rating 69 gallons, 45 gallons certified storage, ENERGY STAR connected-capable

4.7/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.83
First-hour rating	69 gallons
Certified storage volume	45 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.83
First-hour rating (ENERGY STAR)	69 gallons
Certified storage volume (ENERGY STAR)	45 gallons
Annual energy use (ENERGY STAR)	848 kWh/year
Annual energy use per gallon (computed)	18.8 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	21.0 A
Lower compressor cut-off temperature (ENERGY STAR)	35.0 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	437%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	45.8 in
Tank diameter (ENERGY STAR)	18.2 in
Refrigerant (ENERGY STAR)	R-513A
Certified model number	ARIHPWH-50-T
Official brand name on the ENERGY STAR record	Ariston
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Specs sources:

#27

Lennox WHHP050T45MD240S

Best for: Official UEF 3.83, first-hour rating 69 gallons, 45 gallons certified storage, ENERGY STAR connected-capable

4.7/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.83
First-hour rating	69 gallons
Certified storage volume	45 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.83
First-hour rating (ENERGY STAR)	69 gallons
Certified storage volume (ENERGY STAR)	45 gallons
Annual energy use (ENERGY STAR)	848 kWh/year
Annual energy use per gallon (computed)	18.8 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	21.0 A
Lower compressor cut-off temperature (ENERGY STAR)	35.0 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	437%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	45.8 in
Tank diameter (ENERGY STAR)	18.2 in
Refrigerant (ENERGY STAR)	R-513A
Certified model number	WHHP050T45MD240S****
Official brand name on the ENERGY STAR record	Lennox
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Specs sources:

#28

Midea MAHW-50VN3B

Best for: Official UEF 3.75, first-hour rating 71 gallons, 46 gallons certified storage, ENERGY STAR connected-capable

4.7/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.75
First-hour rating	71 gallons
Certified storage volume	46 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.75
First-hour rating (ENERGY STAR)	71 gallons
Certified storage volume (ENERGY STAR)	46 gallons
Annual energy use (ENERGY STAR)	861 kWh/year
Annual energy use per gallon (computed)	18.7 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	24.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.4 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	420%
Sound pressure level (ENERGY STAR)	49 dB
Tank height (ENERGY STAR)	46.6 in
Tank diameter (ENERGY STAR)	18.3 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	MAHW-50VN3B
Official brand name on the ENERGY STAR record	Midea
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Specs sources:

#29

Rheem PRO H65 T2 RH310UM

Best for: Official UEF 3.5, first-hour rating 75 gallons, 59 gallons certified storage, ENERGY STAR connected-capable

4.7/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

Official uniform energy factor of 3.5 is at the low end of this set

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.5
First-hour rating	75 gallons
Certified storage volume	59 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.5
First-hour rating (ENERGY STAR)	75 gallons
Certified storage volume (ENERGY STAR)	59 gallons
Annual energy use (ENERGY STAR)	900 kWh/year
Annual energy use per gallon (computed)	15.3 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	21.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	409%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	64.2 in
Tank diameter (ENERGY STAR)	24.3 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	PRO H65 T2 RH310UM
Official brand name on the ENERGY STAR record	Rheem
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Specs sources:

#30

Rinnai REHP50W

Best for: Official UEF 3.75, first-hour rating 71 gallons, 46 gallons certified storage, ENERGY STAR connected-capable

4.7/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.75
First-hour rating	71 gallons
Certified storage volume	46 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.75
First-hour rating (ENERGY STAR)	71 gallons
Certified storage volume (ENERGY STAR)	46 gallons
Annual energy use (ENERGY STAR)	861 kWh/year
Annual energy use per gallon (computed)	18.7 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	24.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.4 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	420%
Sound pressure level (ENERGY STAR)	49 dB
Tank height (ENERGY STAR)	46.6 in
Tank diameter (ENERGY STAR)	18.3 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	REHP50W
Official brand name on the ENERGY STAR record	Rinnai
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Specs sources:

#31

ACIQ ACIQ-50G-HP-WH

Best for: Official UEF 3.75, first-hour rating 69 gallons, 47 gallons certified storage, ENERGY STAR connected-capable

4.6/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.75
First-hour rating	69 gallons
Certified storage volume	47 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.75
First-hour rating (ENERGY STAR)	69 gallons
Certified storage volume (ENERGY STAR)	47 gallons
Annual energy use (ENERGY STAR)	855 kWh/year
Annual energy use per gallon (computed)	18.2 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	24.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.4 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	430%
Sound pressure level (ENERGY STAR)	49 dB
Tank height (ENERGY STAR)	47.9 in
Tank diameter (ENERGY STAR)	18.3 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	ACIQ-50G-HP-WH
Official brand name on the ENERGY STAR record	ACIQ
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Specs sources:

#32

Bosch TR7000T - 50US

Best for: Official UEF 3.75, first-hour rating 69 gallons, 47 gallons certified storage, ENERGY STAR connected-capable

4.6/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.75
First-hour rating	69 gallons
Certified storage volume	47 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.75
First-hour rating (ENERGY STAR)	69 gallons
Certified storage volume (ENERGY STAR)	47 gallons
Annual energy use (ENERGY STAR)	855 kWh/year
Annual energy use per gallon (computed)	18.2 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	24.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.4 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	430%
Sound pressure level (ENERGY STAR)	49 dB
Tank height (ENERGY STAR)	47.9 in
Tank diameter (ENERGY STAR)	18.3 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	TR7000T - 50US
Official brand name on the ENERGY STAR record	Bosch
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Specs sources:

#33

Senville SENWH-HP50US

Best for: Official UEF 3.75, first-hour rating 69 gallons, 47 gallons certified storage, ENERGY STAR connected-capable

4.6/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.75
First-hour rating	69 gallons
Certified storage volume	47 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.75
First-hour rating (ENERGY STAR)	69 gallons
Certified storage volume (ENERGY STAR)	47 gallons
Annual energy use (ENERGY STAR)	855 kWh/year
Annual energy use per gallon (computed)	18.2 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	24.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.4 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	430%
Sound pressure level (ENERGY STAR)	49 dB
Tank height (ENERGY STAR)	47.9 in
Tank diameter (ENERGY STAR)	18.3 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	SENWH-HP50US
Official brand name on the ENERGY STAR record	Senville
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Specs sources:

#34

A. O. Smith HPTS-50

Best for: Official UEF 3.8, first-hour rating 65 gallons, 46 gallons certified storage, ENERGY STAR connected-capable

4.5/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.8
First-hour rating	65 gallons
Certified storage volume	46 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.8
First-hour rating (ENERGY STAR)	65 gallons
Certified storage volume (ENERGY STAR)	46 gallons
Annual energy use (ENERGY STAR)	831 kWh/year
Annual energy use per gallon (computed)	18.1 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	22.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.0 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	452%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	63 in
Tank diameter (ENERGY STAR)	15 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	HPTS-50 2**
Official brand name on the ENERGY STAR record	A. O. Smith
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Specs sources:

#35

American Standard ASHPWH-50

Best for: Official UEF 3.75, first-hour rating 68 gallons, 45 gallons certified storage, ENERGY STAR connected-capable

4.5/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.75
First-hour rating	68 gallons
Certified storage volume	45 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.75
First-hour rating (ENERGY STAR)	68 gallons
Certified storage volume (ENERGY STAR)	45 gallons
Annual energy use (ENERGY STAR)	867 kWh/year
Annual energy use per gallon (computed)	19.3 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	21.0 A
Lower compressor cut-off temperature (ENERGY STAR)	35.0 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	430%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	45.8 in
Tank diameter (ENERGY STAR)	18.2 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	ASHPWH-50*****
Official brand name on the ENERGY STAR record	AMERICAN STANDARD WATER HEATERS
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Specs sources:

#36

GREE GRS-3.0Pd/TD50GANhA-D

Best for: Official UEF 4.02, first-hour rating 80 gallons, 55 gallons certified storage

4.5/10

What we like

Official uniform energy factor of 4.02

Watch out for

ENERGY STAR does not list this model as connected-capable

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	4.02
First-hour rating	80 gallons
Certified storage volume	55 gallons
Connected capable	No
Uniform energy factor (ENERGY STAR UEF)	4.02
First-hour rating (ENERGY STAR)	80 gallons
Certified storage volume (ENERGY STAR)	55 gallons
Annual energy use (ENERGY STAR)	1234 kWh/year
Annual energy use per gallon (computed)	22.4 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	No
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	23.9 A
Lower compressor cut-off temperature (ENERGY STAR)	35.6 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	450%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	66.9 in
Tank diameter (ENERGY STAR)	25.2 in
Refrigerant (ENERGY STAR)	R-32
Certified model number	GRS-3.0Pd/TD50GANhA-D
Official brand name on the ENERGY STAR record	GREE
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Specs sources:

#37

A. O. Smith CAHP-50

Best for: Official UEF 3.68, first-hour rating 65 gallons, 46 gallons certified storage, ENERGY STAR connected-capable

4.1/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.68
First-hour rating	65 gallons
Certified storage volume	46 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.68
First-hour rating (ENERGY STAR)	65 gallons
Certified storage volume (ENERGY STAR)	46 gallons
Annual energy use (ENERGY STAR)	883 kWh/year
Annual energy use per gallon (computed)	19.2 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	22.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.0 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	416%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	63 in
Tank diameter (ENERGY STAR)	15 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	CAHP-50 2**
Official brand name on the ENERGY STAR record	A. O. Smith
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Specs sources:

#38

State CSHP-50

Best for: Official UEF 3.68, first-hour rating 65 gallons, 46 gallons certified storage, ENERGY STAR connected-capable

4.1/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

No additional scored gaps in the official record we used

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.68
First-hour rating	65 gallons
Certified storage volume	46 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.68
First-hour rating (ENERGY STAR)	65 gallons
Certified storage volume (ENERGY STAR)	46 gallons
Annual energy use (ENERGY STAR)	883 kWh/year
Annual energy use per gallon (computed)	19.2 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	22.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.0 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	416%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	63 in
Tank diameter (ENERGY STAR)	15 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	CSHP-50 2**
Official brand name on the ENERGY STAR record	State
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Specs sources:

#39

Vaughn ME80HPT

Best for: Official UEF 3.48, first-hour rating 86 gallons, 74 gallons certified storage

4.1/10

What we like

Official certified ratings are published for every scored criterion

Watch out for

Official uniform energy factor of 3.48 is at the low end of this set
ENERGY STAR does not list this model as connected-capable

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.48
First-hour rating	86 gallons
Certified storage volume	74 gallons
Connected capable	No
Uniform energy factor (ENERGY STAR UEF)	3.48
First-hour rating (ENERGY STAR)	86 gallons
Certified storage volume (ENERGY STAR)	74 gallons
Annual energy use (ENERGY STAR)	1424 kWh/year
Annual energy use per gallon (computed)	19.2 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	No
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	23.0 A
Lower compressor cut-off temperature (ENERGY STAR)	35.0 °F
Draw pattern (ENERGY STAR)	High-Usage
Recovery efficiency (ENERGY STAR)	365%
Sound pressure level (ENERGY STAR)	54 dB
Tank height (ENERGY STAR)	74 in
Tank diameter (ENERGY STAR)	28 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	ME80HPT
Official brand name on the ENERGY STAR record	VAUGHN THERMAL
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Specs sources:

#40

Rheem PRO H50 T2 RH310UM

Best for: Official UEF 3.5, first-hour rating 67 gallons, 45 gallons certified storage, ENERGY STAR connected-capable

3.7/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

Official uniform energy factor of 3.5 is at the low end of this set

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.5
First-hour rating	67 gallons
Certified storage volume	45 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.5
First-hour rating (ENERGY STAR)	67 gallons
Certified storage volume (ENERGY STAR)	45 gallons
Annual energy use (ENERGY STAR)	915 kWh/year
Annual energy use per gallon (computed)	20.3 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	21.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.0 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	400%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	61.8 in
Tank diameter (ENERGY STAR)	22.3 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	PRO H50 T2 RH310UM
Official brand name on the ENERGY STAR record	Rheem
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Specs sources:

#41

A. O. Smith CAHP-40

Best for: Official UEF 3.6, first-hour rating 55 gallons, 36 gallons certified storage, ENERGY STAR connected-capable

2.9/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

Lower official first-hour rating in this set (55 gallons)

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.6
First-hour rating	55 gallons
Certified storage volume	36 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.6
First-hour rating (ENERGY STAR)	55 gallons
Certified storage volume (ENERGY STAR)	36 gallons
Annual energy use (ENERGY STAR)	902 kWh/year
Annual energy use per gallon (computed)	25.1 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	22.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.0 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	426%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	66 in
Tank diameter (ENERGY STAR)	20 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	CAHP-40 2**
Official brand name on the ENERGY STAR record	A. O. Smith
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Specs sources:

#42

Bradford White RE2HP50-1NCTT

Best for: Official UEF 3.89, first-hour rating 65 gallons, 45 gallons certified storage

2.9/10

What we like

Official certified ratings are published for every scored criterion

Watch out for

ENERGY STAR does not list this model as connected-capable

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.89
First-hour rating	65 gallons
Certified storage volume	45 gallons
Connected capable	No
Uniform energy factor (ENERGY STAR UEF)	3.89
First-hour rating (ENERGY STAR)	65 gallons
Certified storage volume (ENERGY STAR)	45 gallons
Annual energy use (ENERGY STAR)	835 kWh/year
Annual energy use per gallon (computed)	18.6 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	No
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	19.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.0 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	445%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	46.1 in
Tank diameter (ENERGY STAR)	18 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	RE2HP50**-1NCTT
Official brand name on the ENERGY STAR record	Bradford White
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Specs sources:

#43

Noritz NHP-50-240

Best for: Official UEF 3.85, first-hour rating 68 gallons, 45 gallons certified storage

2.9/10

What we like

Official certified ratings are published for every scored criterion

Watch out for

ENERGY STAR does not list this model as connected-capable

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.85
First-hour rating	68 gallons
Certified storage volume	45 gallons
Connected capable	No
Uniform energy factor (ENERGY STAR UEF)	3.85
First-hour rating (ENERGY STAR)	68 gallons
Certified storage volume (ENERGY STAR)	45 gallons
Annual energy use (ENERGY STAR)	844 kWh/year
Annual energy use per gallon (computed)	18.8 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	No
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	21.3 A
Lower compressor cut-off temperature (ENERGY STAR)	23.0 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	438%
Sound pressure level (ENERGY STAR)	48 dB
Tank height (ENERGY STAR)	61.4 in
Tank diameter (ENERGY STAR)	22 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	NHP-50-240
Official brand name on the ENERGY STAR record	Noritz
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Specs sources:

#44

Rheem PRO H40 T2 RH310UM

Best for: Official UEF 3.5, first-hour rating 60 gallons, 36 gallons certified storage, ENERGY STAR connected-capable

2.9/10

What we like

ENERGY STAR lists this model as connected-capable

Watch out for

Official uniform energy factor of 3.5 is at the low end of this set
Lower official first-hour rating in this set (60 gallons)

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.5
First-hour rating	60 gallons
Certified storage volume	36 gallons
Connected capable	Yes
Uniform energy factor (ENERGY STAR UEF)	3.5
First-hour rating (ENERGY STAR)	60 gallons
Certified storage volume (ENERGY STAR)	36 gallons
Annual energy use (ENERGY STAR)	879 kWh/year
Annual energy use per gallon (computed)	24.4 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	Yes
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	21.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.0 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	430%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	62.3 in
Tank diameter (ENERGY STAR)	20.3 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	PRO H40 T2 RH310UM
Official brand name on the ENERGY STAR record	Rheem
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Specs sources:

#45

Rheem PRO H50 T2 RH310BM

Best for: Official UEF 3.5, first-hour rating 67 gallons, 45 gallons certified storage

1.9/10

What we like

Official certified ratings are published for every scored criterion

Watch out for

Official uniform energy factor of 3.5 is at the low end of this set
ENERGY STAR does not list this model as connected-capable

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.5
First-hour rating	67 gallons
Certified storage volume	45 gallons
Connected capable	No
Uniform energy factor (ENERGY STAR UEF)	3.5
First-hour rating (ENERGY STAR)	67 gallons
Certified storage volume (ENERGY STAR)	45 gallons
Annual energy use (ENERGY STAR)	915 kWh/year
Annual energy use per gallon (computed)	20.3 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	No
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	21.0 A
Lower compressor cut-off temperature (ENERGY STAR)	37.0 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	400%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	61.8 in
Tank diameter (ENERGY STAR)	22.3 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	PRO H50 T2 RH310BM
Official brand name on the ENERGY STAR record	Rheem
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Specs sources:

#46

A. O. Smith FPTU-50

Best for: Official UEF 3.35, first-hour rating 66 gallons, 46 gallons certified storage

1.5/10

What we like

Official certified ratings are published for every scored criterion

Watch out for

Lowest official uniform energy factor in this comparison (3.35)
ENERGY STAR does not list this model as connected-capable

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.35
First-hour rating	66 gallons
Certified storage volume	46 gallons
Connected capable	No
Uniform energy factor (ENERGY STAR UEF)	3.35
First-hour rating (ENERGY STAR)	66 gallons
Certified storage volume (ENERGY STAR)	46 gallons
Annual energy use (ENERGY STAR)	970 kWh/year
Annual energy use per gallon (computed)	21.1 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	No
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	22.0 A
Lower compressor cut-off temperature (ENERGY STAR)	45.0 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	407%
Sound pressure level (ENERGY STAR)	Not listed
Tank height (ENERGY STAR)	63 in
Tank diameter (ENERGY STAR)	15 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	FPTU-50 1**
Official brand name on the ENERGY STAR record	A. O. Smith
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Specs sources:

#47

Vaughn ME50HPT

Best for: Official UEF 3.46, first-hour rating 58 gallons, 47 gallons certified storage

1.3/10

What we like

Official certified ratings are published for every scored criterion

Watch out for

Official uniform energy factor of 3.46 is at the low end of this set
Lower official first-hour rating in this set (58 gallons)
ENERGY STAR does not list this model as connected-capable

Score breakdown

Uniform energy factor 36%

First-hour rating 28%

Certified storage volume 18%

Connected capable 18%

Uniform energy factor	3.46
First-hour rating	58 gallons
Certified storage volume	47 gallons
Connected capable	No
Uniform energy factor (ENERGY STAR UEF)	3.46
First-hour rating (ENERGY STAR)	58 gallons
Certified storage volume (ENERGY STAR)	47 gallons
Annual energy use (ENERGY STAR)	938 kWh/year
Annual energy use per gallon (computed)	20.0 kWh/year per gallon, computed as certified annual energy use ÷ certified storage volume
Connected capable (ENERGY STAR)	No
Heat pump type (ENERGY STAR)	240 Volt Integrated HPWH
Input voltage (ENERGY STAR)	240 V
Maximum current (ENERGY STAR)	23.0 A
Lower compressor cut-off temperature (ENERGY STAR)	35.0 °F
Draw pattern (ENERGY STAR)	Medium-Usage
Recovery efficiency (ENERGY STAR)	373%
Sound pressure level (ENERGY STAR)	54 dB
Tank height (ENERGY STAR)	58.3 in
Tank diameter (ENERGY STAR)	28 in
Refrigerant (ENERGY STAR)	R-134a
Certified model number	ME50HPT
Official brand name on the ENERGY STAR record	VAUGHN THERMAL
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Specs sources:

Buying guide: how to choose the right 240-volt heat pump water heater

Use the certified UEF and first-hour rating, not an older energy-factor claim

ENERGY STAR publishes uniform energy factor (UEF) and a first-hour rating for these models. Older “energy factor” figures and brochure first-hour claims can differ. We score only the official UEF and first-hour rating on the ENERGY STAR record, and we show the certified storage volume even when it is lower than the marketed tank size.

A 240-volt circuit is part of the official listing

Every model in this table is listed as a 240-volt integrated heat pump water heater. That typically means a dedicated 240-volt branch circuit, a condensate drain, and enough surrounding air for the heat pump. We do not infer breaker size, wire gauge or closet clearance from the ENERGY STAR record. Follow the maker’s installation instructions and local code. 120-volt models are compared in a separate table.

Larger certified storage is not automatically the right unit

We give certified storage volume a weight in the score because it is a complete official field and it is related to how much hot water the tank can hold. A higher volume still has to match the household and the space. Use the official first-hour rating to compare delivery, then match tank size to the location and the load.

Safety and installation

Heat pump water heaters in this set commonly use a flammable or mildly flammable refrigerant in a sealed system. Do not puncture the sealed system. The tank needs a working temperature-and-pressure relief valve and a discharge path as the maker directs. Set the temperature to reduce scald risk, especially where children or older adults use the hot water. Provide the clearances, condensate drain and electrical circuit the installer and the manual require. This is not a substitute for the product manual or a licensed installer.

How this ranking is calculated

Score = weighted average of normalised specs, out of 10. Full method

Uniform energy factorOfficial ENERGY STAR uniform energy factor. Higher means more hot water delivered per unit of electricity. Missing values take the category minimum. Scale: 3.2 → 4.5.

36%

First-hour ratingOfficial ENERGY STAR first-hour rating in gallons. Missing values take the category minimum. Scale: 55 → 101 gallons.

28%

Certified storage volumeOfficial ENERGY STAR certified storage volume in gallons, which can differ from the marketed tank size. A larger tank is not automatically the right unit for a small household. Missing values take the category minimum. Scale: 36 → 82 gallons.

18%

Connected capableYes when the official ENERGY STAR record lists the model as connected-capable. Unstated counts as no.

18%

Frequently asked questions

Why is the certified storage volume lower than the 50- or 80-gallon name I see in stores?

We use the official ENERGY STAR certified storage volume, not the marketed tank size. A model sold as a 50-gallon heat pump water heater may certify at 45, 46 or 47 gallons. The table shows the certified number and labels it as certified storage volume.

Why aren't 120-volt heat pump water heaters in this ranking?

They have their own comparison. Official first-hour ratings and UEF values on 120-volt integrated models are often lower than on 240-volt models of a similar marketed size, and they use a different circuit. Mixing them in one table would bury that distinction in a single score. The 120-volt table is built from the same ENERGY STAR dataset.

Why aren't SANCO2, Smart Solar or other split-system units ranked here?

They appear on the official ENERGY STAR heat pump water heater list as split-system combinations (an outdoor unit plus a storage tank). We did not put them in this integrated-only table, because the installation is different from a single 240-volt tank. We also did not fetch a complete official specification table for every split-system catalog page in this pass.

Did you test these water heaters or list prices?

No. HeatPick ranks official ENERGY STAR certified ratings only. We do not test units, and we do not show prices or customer ratings.

What if the ENERGY STAR record uses a model number with asterisks, such as A. O. Smith CAHP-80 2**?

ENERGY STAR uses wildcards for color, wiring or finish suffixes of the same basic model. We show the certified model number in the details, display a cleaned name (for example A. O. Smith CAHP-80), and search Amazon with that cleaned name. The UEF, first-hour rating and storage volume are the ones on that official record.

Why do noise, warranty and closet clearance say Not listed?

Sound pressure level is on some ENERGY STAR records and is shown when it is present; otherwise we show Not listed. Warranty, closet clearance, breaker size and installation cost are not in the ENERGY STAR certified-product fields we used. We did not fetch a maker product page for these models in this pass, so we leave those extras as Not listed rather than copying them from a retailer listing.

Top pick · 9.9/10GE Profile PH80S10BNY01

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