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10 Best gas tankless water heaters of 2025
Save up to 12% off
Best Choice1
Clicked 1,137 times in the last monthRinnaiNEW Rinnai RX199iN Condensing Smart Sense Natural Gas or Propane Tankless Water Heater, Indoor or Outdoor Water Heater, Up to 11.1 GPM, 199,000 BTU
Key specs-
special features:Indoor/outdoor install
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maximum flow rate:11.1 GPM
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maximum temperature:N/A
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heat output:N/A
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voltage:N/A
9.8Exceptional
Our Rating
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Value for Money2
RheemRheem RTGH-95DVLN-3 RTGH Series 9.5 GPM 199,900 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater Stainless Steel
Key specs-
special features:Electric ignition
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maximum flow rate:0.4 - 9.5 GPM
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maximum temperature:140F
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heat output:N/A
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voltage:N/A
9.7Exceptional
Our Rating
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3
RaneinRanein Natural Gas Tankless Water Heater, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater
Key specs-
special features:Dry Combustion Protection, Flame Failure Protection
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maximum flow rate:3.6 Gallons Per Minute
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maximum temperature:149 Degrees Fahrenheit
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heat output:80,000 BTU
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voltage:120 Volts AC
9.6Exceptional
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4
forimoTankless Water Heater Natural Gas,4.74GPM 18L Indoor,Instant Hot Gas Water Heater,Constant Natural Water Heater with Fahrenheit Digital Display,Multi-Protection (Black)
Key specs-
special features:Steady Temperature Control
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maximum flow rate:4.74 GPM
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maximum temperature:167 F
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heat output:68000 BTU/hour
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voltage:N/A
9.3Excellent
Our Rating
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5
RheemRheem RTG-70DVLN-3 High Efficiency Non-Condensing Indoor Tankless Natural Gas Water Heater, 7.0 GPM
Key specs-
special features:Continuous Hot Water, Energy Efficient
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maximum flow rate:7 Gallons Per Minute
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maximum temperature:140 Degrees Fahrenheit
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heat output:N/A
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voltage:N/A
9.2Excellent
Our Rating
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6
OrbekNatural Gas Tankless Water Heater - ORBEK 100,000 BTU Up to 4.3 GPM Indoor Installation - CSA Certified On-Demand Instant Hot Water Heater 3/4" NPT Connector Size
Key specs-
special features:Anti-scalding, anti-freeze protection
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maximum flow rate:N/A
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maximum temperature:N/A
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heat output:N/A
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voltage:120 Volts AC
9.0Excellent
Our Rating
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7
VELPAXNatural Gas Tankless Water Heater,4.21GPM 16L Indoor,Instant Hot Gas Water Heater,Constant Natural Water Heater with Fahrenheit Digital Display,Multi-Protection
8.7Very Good
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8
RinnaiRinnai V75IN Tankless Hot Water Heater, 7.5 GPM, Natural Gas, Indoor Installation
12% OffKey specs-
special features:Energy Factor of .82
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maximum flow rate:7.5 Gallons Per Minute
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maximum temperature:140 F
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heat output:N/A
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voltage:120 Volts
8.6Very Good
Our Rating
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9
FOGATTIFOGATTI Natural Gas Tankless Water Heater - Outdoor Installation Up to 8.1 GPM, Gray Instant Hot Water Heater - Instagas Comfort 180S Series
8.5Good
Our Rating
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10
forimoForimo Tankless Water Heater NG-4.21GPM-16L, Indoor, Instant Hot Gas, Black, Modern Style
Key specs-
special features:Steady Temperature Control
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maximum flow rate:4.21 gallons/min
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maximum temperature:167 F
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heat output:68000 BTU/hour
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voltage:N/A
8.4Good
Our Rating
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