10 bestTankless 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
10.0
2
RINNAI V Series He Tankless Hot Water Heater: Indoor Installation
Rinnai
10.0
3
RINNAI Ru Series Sensei Se+ Tankless Hot Water Heater: Indoor Installation
Rinnai
9.9
25% off
4
RINNAI RX160iN Condensing Tankless Water Heater RX160 Features 0.95 UEF with 160k BTU.
Rinnai
9.8
18% 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
9.6
OtherUp to 6% off
Stiebel Eltron Tankless Water Heater – Tempra 29 Plus – Electric, On Demand Hot Water, Eco, White - 23, Gloss White
Rheem 11kW 240V Tankless Electric Water Heater
Rheem RTEX-24 24kW 240V Electric Tankless Water Heater, Gray
Stiebel Eltron 12 Trend Tempra, Tankless Water Heater, White
6
Rinnai V53DeN Natural Gas Tankless Hot Water Heater, 5.3 GPM, Outdoor Installation
Rinnai
9.4
7
Rheem RTEX-27 240V 3 Heating Chambers Residential Tankless Water Heater
Rheem
9.2
8
Rinnai RE140iP Non-Condensing Propane Tankless Water Heater, Up to 5.3 GPM, Indoor Installation, 140,000 BTU
Rinnai
9.0
9
Rinnai RUCS65IP Ultra Series Tankless Water Heater, White
Rinnai
8.8
10
Rheem 240V 2 Heating Chambers RTEX-18 Residential Tankless Water Heater, Small Grey
Rheem
8.5
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