10 bestIndoor Tankless Electric Hot Water Heatersof March 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
5% off
2

Ecosmart ECO Electric Tankless Water Heater, 27 KW at 240 Volts, 112.5 Amps with Patented Self Modulating Technology, White
EcoSMART

9.6
3

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

9.5
18% off
4

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

9.3
5% off
5

Rheem 240V 2 Heating Chambers RTEX-18 Residential Tankless Water Heater, Small Grey
Rheem

9.1
OtherUp to 7% off
6

RINNAI V Series He Tankless Hot Water Heater: Indoor Installation
Rinnai

8.8
7

Stiebel Eltron Tankless Water Heater – Tempra 29 Plus – Electric, On Demand Hot Water, Eco, White - 23, Gloss White
Stiebel Eltron

8.6
20% 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

8.3
10% off
9

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
VEVOR

8.0
6% off
10

Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
Rheem

7.8
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