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Rv Tankless Water Heater Comparison - July 2025
| 1 Best Choice  9.9Exceptional | 2  9.8Exceptional | 3  9.7Exceptional | 4  9.6Exceptional | 5 Best Value  9.5Excellent | 6  9.4Excellent | 7  9.3Excellent |
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ModelGIRARD Tankless RV Water Heater, 12V Power, 42,000 BTUs, Quiet Operation, Onboard Microprocessor, Digital User Control Panel, Freeze Protection, Easy Installation - 2022107534 | Model RV Tankless Water Heater without Door, KINGRVER, Propane Gas, DC 12V, 3 Optional Door Sizes 15"x15", 15"x18" and 18"x18" for Refitment, Compatible with All RVs, Sufficient Power, High Altitude | Model Ranein 65,000 BTU RV Tankless Water Heater, High Altitude Available, 12V, CSA Certificated, with Thermostatic Chamber and Multi-function Controller, On Demand Instant Hot Water Heater | Model RV Tankless Water Heater Propane Gas, RVPart Pro, with 15"x15" White Door and Remote Controller, DC 12V, 7×24 Technical Support, High Altitude, Easy Installation, Compatible with All RVs,GT42,White | Model ITEFDTUTNE RV Tankless Water Heater, with 15 x 15 inches White Door and Remote Controller, DC 12V, Best High Altitude Performance, Ideal for RVers' Daily use | Model Suburban RV Tankless 60,000 BTU Water Heater - Endless Hot Water Supply, Energy Saving, Digital User Control Center, Designed for Safety, Freeze Protection (ST-60) | Model ITEFDTUTNE RV Tankless Water Heater, High Altitude Available, with White Door and Controller, DC 12V, On Demand Instant Hot Water Heater, With RV Extra External Water Outlet, Push-To-Open Door |
BrandGIRARD | Brand KINGRVER | Brand Ranein | Brand RVPart Pro | Brand ITEFDTUTNE | Brand Suburban | Brand ITEFDTUTNE |
Reviews | Reviews | Reviews | Reviews | Reviews  | Reviews | Reviews |
Features | ||||||
Easy installation 8.9 | Easy installation  9.6 | Easy installation 9.4 | Easy installation 8.1 | Easy installation 7.6 | Easy installation 7.4 | Easy installation 7.2 |
Temperature control 8.6 | Temperature control 9.9 | Temperature control 9.9 | Temperature control 8.9 | Temperature control 8.4 | Temperature control 8.1 | Temperature control 7.9 |
Tech support 7.9 | Tech support 8.1 | Tech support 7.9 | Tech support 7.0 | Tech support 7.0 | Tech support 7.0 | Tech support 7.0 |
Tech Specs | ||||||
product dimensions 12.5W x 12.5H | product dimensions 12.7W x 12.7H | product dimensions 15W x 15H | product dimensions 14.3W x 15H | product dimensions 12.6W x 13.98H | product dimensions 20 x 12 x 12 inches | product dimensions 12.8W x 12.8H |
item weight 22 pounds | item weight 25.7 pounds | item weight 31.2 pounds | item weight 31.3 pounds | item weight 27.6 pounds | item weight 22 pounds | item weight 28.4 pounds |
customer reviews4.4 4.4 out of 5 stars 1, 382 ratings 4.4 out of 5 stars | customer reviews 4.7 4.7 out of 5 stars 18 ratings 4.7 out of 5 stars | customer reviews 4.6 4.6 out of 5 stars 243 ratings 4.6 out of 5 stars | customer reviews 4.1 4.1 out of 5 stars 26 ratings 4.1 out of 5 stars | customer reviews 5.0 5.0 out of 5 stars 3 ratings 5.0 out of 5 stars | customer reviews 3.0 3.0 out of 5 stars 3 ratings 3.0 out of 5 stars | customer reviews 3.9 3.9 out of 5 stars 6 ratings 3.9 out of 5 stars |
color Gray | color 48, 000 BTU | color Without door | color White | color White | color - | color White |
batteries included No | batteries included No | batteries included No | batteries included No | batteries included No | batteries included - | batteries included No |
included components Girard 2GWHAM On-Demand GSWH-2 Tankless RV Water Heater | included components Tankless RV Water Heater, Wired Controller | included components Assembly pack x 1, Wired gigital controller x 1, Instruction manual x 1, Tankless water heater x 1 | included components Wired controller, RV tankless water heater | included components RV Water Heater | included components - | included components Main Body + Wall Controller + Screws + Wire Connectors + User Manual |
voltage 12 Volts | voltage 12 Volts DC | voltage 12 Volts DC | voltage 12 Volts DC | voltage 12 Volts DC | voltage - | voltage 12 Volts |
batteries required No | batteries required No | batteries required No | batteries required No | batteries required No | batteries required - | batteries required No |
heat output 42000 British Thermal Units | heat output 48000 British Thermal Units | heat output - | heat output 42000 British Thermal Units | heat output 55000 British Thermal Units | heat output - | heat output 55000 British Thermal Units |
wattage 42000 watts | wattage 43 watts | wattage - | wattage 41 watts | wattage 20 watts | wattage - | wattage 20 watts |
special features Lightweight | special features Low Water Pressure Start Up, Dry Combustion Protection, Overheat Protection, Water Overpressure Protection, Anti-Freezing Protection | special features - | special features Overheat Protection, LED Display, Anti-Freezing Protection | special features Dry Combustion Protection, Flame Failure Protection, Integrated Error Code Indicator, High Water Pressure Protection, Anti-Freezing Protection | special features - | special features - |
special feature Lightweight | special feature Low Water Pressure Start Up, Dry Combustion Protection, Overheat Protection, Water Overpressure Protection, Anti-Freezing Protection | special feature - | special feature Overheat Protection, LED Display, Anti-Freezing Protection | special feature Dry Combustion Protection, Flame Failure Protection, Integrated Error Code Indicator, High Water Pressure Protection, Anti-Freezing Protection | special feature - | special feature - |
maximum flow rate- | maximum flow rate 2.5 Gallons Per Minute | maximum flow rate 3.9 Gallons Per Minute | maximum flow rate - | maximum flow rate 2.8 Liters Per Minute | maximum flow rate - | maximum flow rate 2.8 Liters Per Minute |
maximum pressure- | maximum pressure 116 Pound per Square Inch | maximum pressure - | maximum pressure 150 Pound per Square Inch | maximum pressure 150 Pound per Square Inch | maximum pressure - | maximum pressure 65 Pound per Square Inch |
mounting type- | mounting type Built-in | mounting type Door Mount | mounting type - | mounting type Built-in | mounting type - | mounting type Wall |
is electric- | is electric - | is electric No | is electric Yes | is electric Yes | is electric - | is electric No |
maximum temperature- | maximum temperature - | maximum temperature 124 Degrees Fahrenheit | maximum temperature 123 Degrees Fahrenheit | maximum temperature - | maximum temperature - | maximum temperature 124 Degrees Fahrenheit |
Available On  | Available On | Available On | Available On | Available On | Available On | Available On |
Our Top 3 Picks
Here are the top 3 recommended products with more information to help you find the right product for you
9.9
1GIRARDGIRARD Tankless RV Water Heater, 12V Power, 42,000 BTUs, Quiet Operation, Onboard Microprocessor, Digital User Control Panel, Freeze Protection, Easy Installation - 2022107534
8.9 Easy installation8.6 Temperature control7.9 Tech SupportWhy we love it
Efficient energy use with 42,000 BTUs.
Consistent temperature with intelligent control.
Quiet operation with low power consumption.
-
9.8
2KINGRVER
RV Tankless Water Heater without Door, KINGRVER, Propane Gas, DC 12V, 3 Optional Door Sizes 15"x15", 15"x18" and 18"x18" for Refitment, Compatible with All RVs, Sufficient Power, High Altitude
9.9 Temperature control9.6 Easy installation8.1 Tech SupportWhy we love it
Provides endless hot water.
Easy installation process.
Highly efficient performance.
-
9.7
3Ranein
Ranein 65,000 BTU RV Tankless Water Heater, High Altitude Available, 12V, CSA Certificated, with Thermostatic Chamber and Multi-function Controller, On Demand Instant Hot Water Heater
9.9 Temperature control9.4 Easy installation7.9 Tech SupportMain highlights- 【We've upgraded.】On top of the original. We have upgraded the multi-function remote control. You can view gas usage, voltage, GPM, does anti-freeze device activates, and high altitude available
- 【Steady temperature】Temperature ranges from 95°F-124°F. Built-in constant temperature chamber, no overheating of water due to brief opening and closing. Staged combustion technology controls the amount of flame in summer, prevents the water from getting too hot, and saves the limited propane gas available for caravan travel
- 【Save money and comfort】The a tankless RV water heater with a pressure relief valve built into the unit. You don't have to buy and install it separately. It also comes with a PC 6.6 feet intelligent remote controller. This product does not come with a door and needs to be purchased.
- 【Safety and reliability】Built-in forced exhaust fan on top for stable combustion and automatic gas shut-off in case of accidental flame failure. It has an anti-freeze device that automatically warms up when the temperature falls below 42.8°F to prevent freezing
- 【Replaces all RV water heaters】It has a 12.8 x 12.8" (without door) opening, easy to replace Suburban & Atwood's 6/10/12 gal tank water heaters and your old water heater with appropriate doors. The fitting door kit is available for purchase in 3 sizes: 15" x 15", 15" x 18", or 18" x 18". Door Requires Additional Purchase, Door ASIN: B0D62541MK
- 【Long time bath】Deep fire row design can improve heating efficiency. It can produce up to Max 3.9 GMP hot water and has 65,000 BTU power. It can bring you hot water all the time when there is enough gas and water. There is no need to wait for the water to heat up and take a quick bath like with a tank water heater
- 【Buy with confidence】The RV water heater is CSA certified. When installing, please make sure that the voltage of the RV is 12V. We have a professional service team. If you have any questions, please feel free to contact us. We will solve it for you immediately.
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Features
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Consumer Reviews
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Popularity
Our system also considers the popularity of products, analyzing factors such as market presence, reputation, and user satisfaction. By leveraging AI, we capture a comprehensive picture of a product's standing in the market, which may not always be evident through traditional testing.
Value for money
AI allows us to compare products based on attributes like price, specifications, and user feedback, helping to determine their value for money. This data-driven approach offers an efficient and reliable way to assess how products stack up against one another in terms of cost-effectiveness.
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