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10 Best whole house electric tankless water heaters of 2026
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Best Choice1
Clicked 860 times in the last monthRheemRheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
9.8Exceptional
Our Rating
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Value for Money2
WINTEMPWINTEMP 36kW Tankless Electric Water Heater 240V, Instant On-Demand Endless Hot Water, Up to 8.7 GPM, LED Temperature Display, Whole House Supply, WiFi Control, ETL Certified
Key specs-
heat output:36 Kilowatts
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maximum flow rate:8.7 GPM
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wattage:36 KW
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special features:Overheat Protection, LED Display
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maximum temperature:140°F
9.7Exceptional
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WINTEMPElectric Tankless Water Heater WINTEMP 27kW 240V, Whole House Hot Water Supply, On Demand Instant Endless Water Heater, with LED Temperature Display, WiFi Control, Up to 6.3 GPM, ETL Certified
Key specs-
heat output:27 Kilowatts
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maximum flow rate:6.5 Gallons Per Minute
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wattage:27000 watts
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special features:Overheat Protection, LED Display
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maximum temperature:140 Degrees Fahrenheit
9.6Exceptional
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RheemRheem 18kW 240V Tankless Electric Water Heater, Gray
9.5Excellent
Our Rating
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5
SIVUATEKElectric Tankless Water Heater SIVUATEK 14kW, 240V - On-Demand Hot Water for Whole House - ETL Certified, Self Modulating - Compact Design for Easy Installation - for 2 Point of Use Hot Water
Key specs-
heat output:131 Degrees Fahrenheit
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maximum flow rate:2 Gallons Per Minute
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wattage:14 KW
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special features:Standard pipe fittings, Easy control, Touch sensor, Intuitive display
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maximum temperature:131 Degrees Fahrenheit
9.4Excellent
Our Rating
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SIVUATEK18kW Tankless Water Heater Electric 240V SIVUATEK, Self-Modulating Power for Optimal Efficiency, On Demand Instant Hot Water for Whole House, LED Display, ETL Certified
14% Off Limited Time Deal9.1Excellent
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SIVUATEKElectric Tankless Water Heater SIVUATEK 18kW, 240V - On-Demand Hot Water for Whole House - ETL Certified, Self Modulating - Compact Design for Easy Installation - for 3 Point of Use Hot Water
Key specs-
heat output:131 Degrees Fahrenheit
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maximum flow rate:2.8 GPM
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wattage:18000 watts
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special features:Standard pipe fittings, Easy control, Touch sensor, Intuitive display
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maximum temperature:120 Degrees Fahrenheit
9.0Excellent
Our Rating
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8
RaneinGEN II Ranein 13kW 240V Electric Tankless Water Heater, on Demand Instant Endless Water Heater with LED Temperature Control Panel, Up to 3.1 GPM for Whole House Water
20% Off Limited Time Deal8.9Very Good
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Orbek18kW Tankless Water Heater Electric, ORBEK Instant On Demand Hot Water Heater 240V, Up to 4.17 GPM, Supply for 2-3 Fixtures, within 1℉ Stable Temp, ETL Certified, Indoor Installation
16% Off8.8Very Good
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10
LiberLiveElectric Tankless Water Heater, 11kW 240V on Demand Instant Endless Electric Hot Water Heater for Residential Whole House Shower, Self-Modulating LED Display Knob Control, CSA Certified, Space Saving
15% Off8.7Very Good
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