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9 Best rinnai electric tankless water heaters of 2025
Save up to 33% off
Best Choice1
Clicked 2,049 times in the last weekRinnaiNEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU
Key specs-
maximum flow rate:11.1 GPM
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special features:Indoor/outdoor install
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heat output:N/A
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voltage:N/A
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wattage:N/A
9.9Exceptional
Our Rating
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Value for Money2
RheemRheem RTEX-27 240V 3 Heating Chambers Residential Tankless Water Heater
Key specs-
maximum flow rate:7 Gallons Per Minute
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special features:Most advanced self-modulation
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heat output:92 Degrees
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voltage:240 Volts
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wattage:N/A
9.8Exceptional
Our Rating
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3
RheemRheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
9.6Exceptional
Our Rating
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4
RheemRheem 18kW 240V Tankless Electric Water Heater, Gray
9.5Excellent
Our Rating
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5
Stiebel EltronStiebel Eltron Tankless Water Heater – Tempra 24 Plus – Electric, On Demand Hot Water, Eco, White, 20.2
17% Off9.4Excellent
Our Rating
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RheemRheem 11kW 240V Tankless Electric Water Heater
Key specs-
maximum flow rate:2.68 Gallons Per Minute
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special features:LED Display
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heat output:11 Kilowatts
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voltage:240 Volts
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wattage:11 KW
9.3Excellent
Our Rating
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EcoSmartEcoSmart ECO 27 Tankless Water Heater, Electric, 27-kW - Quantity 1, 17 x 17 x 3.5
33% Off9.2Excellent
Our Rating
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8
RheemRheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, GRAY
Key specs-
maximum flow rate:3.17 Gallons Per Minute
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special features:LED Display
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heat output:13 Kilowatts
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voltage:240 Volts
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wattage:13 KW
9.0Excellent
Our Rating
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9
WestinghouseWestinghouse 27kW Tankless Water Heater Electric, Up to 6.3 GPM Instant Hot Water Heater, Wi-Fi Enabled, Self Modulating for Whole House Shower, 240V, APOLO-27k
Key specs-
maximum flow rate:6.3 Gallons Per Minute
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special features:Wi-Fi Enabled, Self-Modulating, LED Display
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heat output:N/A
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voltage:N/A
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wattage:N/A
8.7Very Good
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