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10 Best propane tankless water heater indoors of 2025
Save up to 14% off
Best Choice1
Clicked 1,157 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-
maximum flow rate:11.1 GPM
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special features:Indoor/outdoor install
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maximum temperature:N/A
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heat output:N/A
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wattage:N/A
9.9Exceptional
Our Rating
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Value for Money2
RheemRheem RRTGH95DVLP3701178 Rheem RTGH Series 9.5 GPM 199,900 BTU 120 Volt Residential Indoor Liquid Propane Tankless Water Heater Stainless Steel
Key specs-
maximum flow rate:9.5 Gallons Per Minute
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special features:Electric ignition
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maximum temperature:140 Degrees Fahrenheit
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heat output:N/A
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wattage:N/A
9.6Exceptional
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3
RaneinRanein Propane Gas Tankless Water Heater, Indoor Max 3.6 GPM, 80,000 BTU Instant Hot Water Heater
9.5Excellent
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4
VELPAXPropane Tankless Water Heater, 4.74GPM 18L Indoor,Constant propane water heater,Instant Hot Propane Gas water heater with Fahrenheit Digital Display,Multi-Protection
9.4Excellent
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5
VELPAXPropane Tankless Water Heater, 4.21GPM 16L Indoor,Constant Propane Water Heater,Instant Hot Propane Gas Water Heater with Fahrenheit Digital Display,Multi-Protection
9.3Excellent
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RinnaiRinnai RE140iP Non-Condensing Propane Tankless Water Heater, Up to 5.3 GPM, Indoor Installation, 140,000 BTU
Key specs-
maximum flow rate:5.3 GPM
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special features:LED Display
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maximum temperature:N/A
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heat output:N/A
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wattage:140000 watts
9.0Excellent
Our Rating
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7
forimoTankless Water Heater Propane, 4.74GPM 18L Indoor,Instant Hot Propane Gas Water Heater, with Fahrenheit Digital Display,Multi-Protection (Black)
Key specs-
maximum flow rate:4.74 GPM
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special features:Steady Temperature Control
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maximum temperature:167 F
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heat output:68000 BTU/hour
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wattage:N/A
8.7Very Good
Our Rating
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8
CAMPLUX ENJOY OUTDOOR LIFECAMPLUX Climatech 3 Tankless Water Heater Propane, 65,000 BTU Propane On Demand Hot Water Heater, Max 2.64 GPM, Indoor Installation, CX264, White
8.5Good
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9
RheemRheem RTG-70DVLP-3 High Efficiency Non-Condensing Indoor Tankless Liquid Propane Water Heater, 7.0 GPM
8.3Good
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10
GASLANDGASLAND Gasmart E Propane Tankless Gas Water Heater, Up to 7.6 GPM 199000 BTU Indoor Installation Residential On-demand Instant Hot Water Heater, CE686LP
14% Off8.1Good
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