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10 Best whole house electric tankless water heaters of 2025
Save up to 16% off
Best Choice1
EemaxEemax EX190TC 3-Gallon Series Two Whole House Electric Tankless Water Heater
9.8Exceptional
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Value for Money2
Stiebel EltronStiebel Eltron Tankless Water Heater - Tempra 20 Trend – Electric, On Demand Hot Water, Eco, White
9.7Exceptional
Our Rating
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RheemRheem 18kW 240V Tankless Electric Water Heater, Gray
9.6Exceptional
Our Rating
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4
Orbek18kW Tankless Water Heater Electric, ORBEK 240 Volt On Demand Instant Hot Water Heater, with LED Digital Display, ETL Certified, Up to 4.17 GPM for 2-3 Point of Use throughout the Whole House
Key specs-
special features:LED Display
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maximum temperature:140°F
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maximum flow rate:4.8 GPM
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wattage:18 KW
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voltage:240 Volts
9.5Excellent
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5
HNKTankless Water Heater Electric ，110v 0-3500W Whole House Tankless Hot Water Heater with Led Temperature Display for Indoor or Outdoor Black-5 Years Quality Assurance
Key specs-
special features:Temperature Lock, Overheat Protection
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maximum temperature:131 Degrees Fahrenheit
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maximum flow rate:1.9 Liters Per Minute
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wattage:3500 watts
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voltage:110 Volts
9.4Excellent
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6
RaneinRanein Electric Tankless Water Heater, 18kW 240V on Demand Instant Endless Water Heater with LED Temperature Display for Residential Whole House Shower, Space Saving
10% OffKey specs-
special features:LED Display
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maximum temperature:131 Degrees Fahrenheit
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maximum flow rate:4.3 GPM
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wattage:18 KW
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voltage:240 Volts AC
9.3Excellent
Our Rating
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7
WestinghouseWestinghouse 27kW 240V Tankless Water Heater Electric, Up to 6.3 GPM Instant Hot Water Heater, Wi-Fi Enabled, Self Modulating for Whole House Shower, APOLO-27k
Key specs-
special features:Wi-Fi Enabled, Self-Modulating, LED Display
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maximum temperature:140 F
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maximum flow rate:6.3 Gallons Per Minute
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wattage:N/A
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voltage:N/A
9.1Excellent
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8
WINTEMPElectric Tankless Water Heater WINTEMP, 27kW 240V Whole House Hot Water Supply Shower, Self-Regulating on-Demand Hot Water, with LED Temperature Display and WIFI Control, Space-Saving ETL
16% OffKey specs-
special features:Overheat Protection, LED Display
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maximum temperature:140 Degrees Fahrenheit
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maximum flow rate:6.5 Gallons Per Minute
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wattage:27000 watts
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voltage:240 Volts AC
8.9Very Good
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9
FOGATTITankless Water Heater Electric, FOGATTI 11kW 240V, On Demand Instant Hot Water Heater, 1-2 Point of Use Hot Water for The Whole House Shower, ETL Certified
8.8Very Good
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10
ECOTOUCHElectric Tankless Water Heater, ECOTOUCH 27kW on Demand Hot Water Heater Electric 240V Instant Tankless Hot Water Heaters Point of Use with ETL Certificated for Whole House Shower ECO270S
Key specs-
special features:Stable Temperature, Auto Shut-off
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maximum temperature:131 Degrees Fahrenheit
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maximum flow rate:N/A
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wattage:27 KW
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voltage:240 Volts
8.6Very Good
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