10 bestTankless Hot Water Heatersof April 2025
112M consumers helped this year.
1

Mizudo Propane Gas Tankless Water Heater 3.6 GPM, 12L Indoor Installation Instant Hot Water Heater
MIZUDO

10.0
2

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

10.0
3

Rheem 11kW 240V Tankless Electric Water Heater
Rheem

9.9
4

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

9.9
5

Rinnai V53DeN Natural Gas Tankless Hot Water Heater, 5.3 GPM, Outdoor Installation
Rinnai

9.8
OtherUp to 20% off
6

RINNAI RXP199iN Condensing Tankless Water Heater RXP199 Features 0.96 UEF with 199k BTU and Pump.
Rinnai

9.7
7

Stiebel Eltron 12 Trend Tempra, Tankless Water Heater, White
Stiebel Eltron

9.6
15% off
8

RINNAI Ru Series Sensei Se+ Tankless Hot Water Heater: Indoor Installation
Rinnai

9.5
9

Rheem 240V Heating Chamber RTEX-13 Residential Tankless Water Heater, Gray
Rheem

9.3
26% off
10

RINNAI RX160iN Condensing Tankless Water Heater RX160 Features 0.95 UEF with 160k BTU.
Rinnai

9.1

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