Tankless Water Heaters
Gas tankless water heaters compared on official ENERGY STAR uniform energy factor, maximum gallons per minute and minimum activation flow.
Ranked comparisons
Buying guides
Head-to-head
Gas Tankless Water HeatersRinnai CX199I vs Rinnai RX199IGas Tankless Water HeatersNavien NPE-240S2 vs Navien NPE-240A2Gas Tankless Water HeatersRinnai CX199I vs Noritz NCC199CDV (GQ-C3261WZ-FF US)Gas Tankless Water HeatersRheem RTGH-S11I vs Bosch T9900 SE 199Gas Tankless Water HeatersCamplux RP199iB vs Camplux RT199iBGas Tankless Water HeatersBradford White RTGR150N1 vs Kiturami KGWH-150JFNGas Tankless Water HeatersVesta VTP-199 vs A. O. Smith ATHR-199MGas Tankless Water HeatersRinnai RX130I vs Takagi T-H3J-OS-NGas Tankless Water HeatersCamplux RP199iB vs Rinnai CX199IGas Tankless Water HeatersCamplux RT199iB vs Rinnai CX199I