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9 Best tankless water heater natural gases of 2026
Save up to 25% off
Best Choice1
Clicked 85 times in the last monthRheemRheem RTG-84XLN-3 High Efficiency Non-Condensing Outdoor Tankless Natural Gas Water Heater 8.4 GPM, 180,000 BTUs
16% Off9.9Exceptional
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Value for Money2
FOGATTIFOGATTI Natural Gas Tankless Water Heater Indoor - Max 7.5 GPM 170,000 BTU, CSA Certified Compact Design On Demand Instant Hot Water Heater - Instagas Comfort 170S Series
Key specs-
maximum flow rate:7.5 Gallons Per Minute
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special features:Multi-Point Hot Water Supply, 2 to 5 Years Warranty, Easy Indoor Installation, CSA Certificated, Energy Saving & High Efficiency
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voltage:120 Volts AC
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heat output:N/A
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wattage:43 Watt-hours
9.7Exceptional
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3
RaneinRanein Natural Gas Tankless Water Heater, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater
25% Off Limited Time DealKey specs-
maximum flow rate:3.6 Gallons Per Minute
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special features:Dry Combustion Protection, Flame Failure Protection
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voltage:120 Volts AC
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heat output:80,000 BTU
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wattage:N/A
9.6Exceptional
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APUSAPUS Tankless Water Heater Natural Gas, Up to 4.42 GPM, Indoor Tankless Water Heater, 95,000 BTU on Demand Instant Hot Water Heaters with Smart Digital Display,Space Gray
9.4Excellent
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5
SNDOASSNDOAS Tankless Water Heater,16L On Demand Water Heater Natural Gas, 4.23 GPM 85,300BTU Instant Hot Water, LED Display, Indoor Installation, 2-3 Point Use for Family Bathroom Kitchen,White
9.3Excellent
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thermomateThermoMate CZ422NG Natural Gas Tankless Water Heater, Up to 5 GPM 113,000 BTU, High Efficiency Instant On-Demand Hot Water for Whole House Use, Indoor Residential Water Heater with Multi-Point Heating
20% Off Limited Time Deal9.2Excellent
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NOVIEEXTankless Water Heater, Novieex On Demand Water Heater Natural Gas, Up to 4.3 GPM, 100,000 BTU Instant Hot Water Heater with LED Display, Indoor Installation, 2-4 Point Use for Family Bathroom Kitchen
9.1Excellent
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HeatrovaNatural Gas Tankless Water Heater Indoor,HeatRova 4.3 GPM 102,000 BTU,Instant Hot Water,Constant Temperature,Pure Copper Heat Exchanger,3/4" NPT Connector,Energy-Saving,On-Demand for 3–4 Fixtures
8.9Very Good
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VELPAXNatural Gas Tankless Water Heater, 4.21GPM 16L Indoor,Instant Hot Natural Gas Water Heater with Multi-Protection
8.8Very Good
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