10 bestElectric Tankless Water Heaterof December 2025
112M consumers helped this year.
11% off
1
Tankless Water Heater Electric 24kW 240 Volt, thermomate On Demand Instant Endless Hot Water Heater, Digital Temperature Display for Residential Whole House Shower, 102A Gray
thermomate
10.0
2
Ecosmart ECO 24 24 KW at 240-Volt Electric Tankless Water Heater with Patented Self Modulating Technology, 17 x 17 x 3.5
EcoSMART
10.0
14% off
3
Thermomate Mini Tank Electric Water Heater ES700 Hard Wired 6.5 Gallons Point of Use Water Heater for Instant Hot Water Under Kitchen Sink 120V 1440W
thermomate
9.9
4
Ecosmart ECO Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology, White
EcoSMART
9.7
10% off
5
Tankless Water Heater Electric 14kW 240 Volt, thermomate On Demand Instant Endless Hot Water Heater, Digital Temperature Display Easy Installation, for Residential Sink & Shower, 58A Gray
thermomate
9.5
6
Rheem 240V 2 Heating Chambers RTEX-18 Residential Tankless Water Heater, Small Grey
Rheem
9.3
11% off
7
Tankless Water Heater Electric 27kW 208~240 Volt, thermomate On Demand Instant Endless Hot Water Heater, Digital Temperature Display for Residential Whole House Shower, 114A Gray
thermomate
9.1
8
Electric Tankless Water Heater, 27kW 240V on Demand Instant Endless Water Heater with LED Temperature Display for Residential Whole House Shower, Space Saving
Ranein
8.9
9
Stiebel Eltron Tankless Water Heater – Tempra 29 Plus – Electric, On Demand Hot Water, Eco, White - 23, Gloss White
Stiebel Eltron
8.7
29% off
10
Rheem RTEX-27 240V 3 Heating Chambers Residential Tankless Water Heater
Rheem
8.4
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