10 bestIndoor Tankless Electric Hot Water Heatersof April 2026
112M consumers helped this year.
1
RINNAI RXP199iN Condensing Tankless Water Heater RXP199 Features 0.96 UEF with 199k BTU and Pump.
Rinnai
9.8
2
RINNAI V Series He Tankless Hot Water Heater: Indoor Installation
Rinnai
9.6
6% off
3
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
Rheem
9.4
6% off
4
Rheem 240V 2 Heating Chambers RTEX-18 Residential Tankless Water Heater, Small Grey
Rheem
9.2
19% off
5
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
8.9
OtherUp to 5% off
Stiebel Eltron Tankless Water Heater – Tempra 29 Plus – Electric, On Demand Hot Water, Eco, White - 23, Gloss White
Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, Gray
VEVOR Instant Water Heater, 18kw Electric Tankless Water Boiler, Digital Temperature Display & Easy Installation & 24-Hour Water Supply, for Kitchen Bathroom Shower Mall Salon Shampoo ETL Listed
thermomate Electric Tankless Water Heater, 11kW at 240 Volt, On Demand Instant Hot Water Heater, Self Modulating Energy Saving, Save Space, 2.15GPM at 35°F Rise
13% off
6
Tankless Water Heater Electric 18kW 240 Volt, thermomate On Demand Instant Endless Hot Water Heater, Digital Temperature Display Easy Installation, for Residential Whole House Shower, 76A GRAY
thermomate
8.7
7
Ecosmart ECO Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology, White
EcoSMART
8.5
12% off
8
CAMPLUX Hot Water Heater 15L (4 Gallons), On-Demand Water Heater Electric Water Heaters with Cord Plug 1.44kW at 120 Volts
CAMPLUX ENJOY OUTDOOR LIFE
8.2
9
CAMPLUX Tankless Electric Water Heaters 18kW, On Demand Hot Water Heater Electric with Digital Display 240V for Shower, White
CAMPLUX ENJOY OUTDOOR LIFE
7.9
10
Rheem 11kW 240V Tankless Electric Water Heater
Rheem
7.6
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