10 bestTankless Gas Water Heatersof July 2026
112M consumers helped this year.
5% off
1
RINNAI RX199iN Condensing Tankless Water Heater RX199 Features 0.96 UEF with 199k BTU.
Rinnai
9.9
2
New Rinnai RX180iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 10 GPM, 180,000 BTU
Rinnai
9.8
3
Bosch Greentherm T9800 SE 160 Tankless Water Heater, 9 GPM Whole Home Hot Water System, Natural Gas or Propane Compatible, High-Efficiency Condensing Design, Indoor Wall Mount
Bosch
9.7
4
Furrion® - Furrion Tankless Gas Water Heater with Antifreeze Protection - 2.4GPM, White
Furrion
9.6
5
Furrion® RV Tankless Gas 60,000 BTU Water Heater - 16.14" x 16.14" White Door - 2.4 GPM – Vortex Technology steadies temperatures – Propane Gas-Powered Technology, Electric Ignition – 2021128847
Furrion
9.4
OtherUp to 26% off
RINNAI RX160iN Condensing Tankless Water Heater RX160 Features 0.95 UEF with 160k BTU.
New Rinnai RX130iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 7.1 GPM, 130,000 BTU
ThermoMate CZ480NG 5.28GPM Condensing Tankless Water Heater, 0.86 UEF High Efficiency Instant On-Demand Hot Water Heater, Residential Indoor Natural Gas Water Heater with Multi-Point Heating
Rinnai RE140eP Non-Condensing Propane Tankless Water Heater, Up to 5.3 GPM, Outdoor Installation, 140,000 BTU
6
Ranein Propane Gas Tankless Water Heater with Vent Pipe, Indoor Max 4.3 GPM, 100,000 BTU Instant Hot Water Heater
Ranein
9.2
7
RV Tankless Water Heater, 65000BTU Dual-Outlet Lockable Instant Camper Hot Water Heater with Controller, 12V Propane Saving Shower for Full Time RV, Off-Grid, High Altitude, 15x15 Inch Door
Xenjum
9.0
8
Rinnai RSC199iN Smart-Circ Condensing Gas Tankless Water Heater, Super High Efficiency Plus Natural Gas Water Heater, Up to 11 GPM, Indoor Installation, 199,000 BTU
Rinnai
8.7
9
Rinnai V53DeN Natural Gas Tankless Water Heater - 5.3 GPM, Outdoor Installation
Rinnai
8.5
10
Rheem RTG-70DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater, 7.0 GPM
Rheem
8.3
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