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10 Best tankless water heater natural gases of 2025
Save up to 12% off
Best Choice1
Clicked 1,148 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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voltage:N/A
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heat output:N/A
9.9Exceptional
Our Rating
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Value for Money2
RheemRheem RRTGH84DVLN3701171 Rheem RTGH Series 8.4 GPM 157,000 BTU 120 Volt Residential Indoor Natural Gas Tankless Water Heater Stainless Steel
9.8Exceptional
Our Rating
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3
RaneinRanein Natural Gas Tankless Water Heater with Vent Pipe, Indoor Max 4.3 GPM, 100,000 BTU Instant Hot Water Heater
Key specs-
Brand:Ranein
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Color:Gray
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Battery Life:N/A
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Screen Size:N/A
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RAM Size:N/A
9.7Exceptional
Our Rating
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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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voltage:N/A
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heat output:68000 BTU/hour
9.4Excellent
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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voltage:N/A
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heat output:N/A
9.3Excellent
Our Rating
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VELPAXNatural Gas Tankless Water Heater,4.21GPM 16L Indoor,Instant Hot Gas Water Heater,Constant Natural Water Heater with Fahrenheit Digital Display,Multi-Protection
9.0Excellent
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7
FOGATTIFOGATTI Natural Gas Tankless Water Heater - Outdoor Installation Up to 8.1 GPM, Gray Instant Hot Water Heater - Instagas Comfort 180S Series
8.9Very Good
Our Rating
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8
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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voltage:120 Volts AC
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heat output:N/A
8.7Very Good
Our Rating
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9
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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voltage:120 Volts
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heat output:N/A
8.6Very Good
Our Rating
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10
VELPAXNatural Gas Tankless Water Heater,5.26GPM 20L Outdoor,Instant Hot Natural Gas Water Heater with Fahrenheit Digital Display,Multi-Protection
8.5Good
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