10 Best Rv Tankless Water Heaters 2026 in the United States
#1
Winner
FOGATTI InstaShower 9 Pro RV Tankless Water Heater, 66,000 BTU (Highest Output), Built-in Mixing Tank, 15x15 Inches White Door, Remote Controller, Ideal for RVers' Everyday Use, Gen 3
The Fogatti RV Tankless Water Heater is a strong choice for RV owners seeking a reliable, on-demand hot water supply. It delivers a high flow rate of 3.6 gallons per minute, enough for simultaneous use in the bathroom and kitchen, which means no waiting around for hot water. Its 66,000 BTU burner adapts to seasonal needs, helping maintain comfortable temperatures without overheating. The built-in mixing tank stabilizes temperature swings, offering precise control within 1 degree Fahrenheit, so showers stay consistent and comfortable.
Rating
10.0
Chosen by1,351
Flow Rate
Energy Source
Temperature Control
Most important from
249 reviews
#2
FOGATTI InstaShower 7 RV Tankless Water Heater, 3 Optional Door Sizes 15"x15", 15"x18" & 18"x18" for Refitment, 12V DC, Optimized Summer Comfort Performance, Ideal for RVers' Family Use, Gen 3
The FOGATTI RV Tankless Water Heater InstaShower 7 is designed specifically for RV users who want instant, on-demand hot water without the wait typical of tank heaters. It offers a solid flow rate of 2.5 gallons per minute with a 48,000 BTU output, which suits family use well, providing enough hot water for showers and washing needs. Powered by 12V DC and consuming just 41 watts, it's energy-efficient and compatible with most RV electrical systems. The heater is compact at about 12.7 inches square and weighs approximately 25.7 pounds, making it a practical fit for many RV spaces.
Rating
8.5
Flow Rate
Installation and Maintenance
Energy Source
Most important from
115 reviews
#3
Tankless Water Heater, Camplux 1.58 GPM Propane Portable Water Heater With Pump Kit, White
The Camplux 1.58 GPM Propane Portable Water Heater is designed for people who want a compact and lightweight option for hot water on the go, such as campers, RV owners, or tiny home users. It offers a decent flow rate of 1.58 gallons per minute, enough for basic outdoor washing or showering needs. The propane fuel source makes it independent of electrical hookups, and it runs off a 12V DC power supply which is common in vehicles, allowing flexible placement and use away from traditional power sources. Its size and weight (just under 15 pounds) combined with a foldable handle make it quite portable and easy to carry or mount on a wall. Temperature control is straightforward with three knobs and an LED display, allowing you to pick a comfortable temperature between 50°F and 122°F, which covers most outdoor needs but might be limited for very hot water preferences.
Rating
7.9
Flow Rate
Energy Source
Size and Weight
Most important from
713 reviews
Top 10 Best Rv Tankless Water Heaters 2026 in the United States
#1
Winner
FOGATTI InstaShower 9 Pro RV Tankless Water Heater, 66,000 BTU (Highest Output), Built-in Mixing Tank, 15x15 Inches White Door, Remote Controller, Ideal for RVers' Everyday Use, Gen 3
FOGATTI InstaShower 9 Pro RV Tankless Water Heater, 66,000 BTU (Highest Output), Built-in Mixing Tank, 15x15 Inches White Door, Remote Controller, Ideal for RVers' Everyday Use, Gen 3
Flow Rate: 3.6 Gallons Per Minute
Energy Source: Propane with 12-volt control
Size and Weight: 15" x 15", 31 pounds
Temperature Control: Precise control within 1°F
Installation and Maintenance: Pressure relief valve, remote controller
Safety Features: Anti-freeze, flame failure, overheat protection
Chosen by 1351 this week
FOGATTI InstaShower 7 RV Tankless Water Heater, 3 Optional Door Sizes 15"x15", 15"x18" & 18"x18" for Refitment, 12V DC, Optimized Summer Comfort Performance, Ideal for RVers' Family Use, Gen 3
FOGATTI InstaShower 7 RV Tankless Water Heater, 3 Optional Door Sizes 15"x15", 15"x18" & 18"x18" for Refitment, 12V DC, Optimized Summer Comfort Performance, Ideal for RVers' Family Use, Gen 3
Flow Rate: 2.5 gallons per minute
Energy Source: 12V DC
Size and Weight: 12.7"W x 12.7"H, 25.7 lbs
Temperature Control: Adjustable 95°F-123°F, remote, high-altitude
Installation and Maintenance: Three door sizes, easier maintenance
Safety Features: Pressure relief valve, exhaust fan, gas shut-off
Tankless Water Heater, Camplux 1.58 GPM Propane Portable Water Heater With Pump Kit, White
Tankless Water Heater, Camplux 1.58 GPM Propane Portable Water Heater With Pump Kit, White
Flow Rate: 1.58 Gallons Per Minute
Energy Source: Propane, 12V DC
Size and Weight: 11.8"W x 17.3"H, 14.5 lbs
Temperature Control: 3 knobs, LED, 50°F-122°F
Installation and Maintenance: Wall-mounted, gas regulators, quick-connect
Safety Features: Anti-freeze, flame, dry combustion, overheat
Furrion Tankless Gas Water Heater, White, 2.4 GPM, 60,000 BTU, Antifreeze Protection, Propane w/Electric Ignition, Wall Thermostat, Retrofit RV Water Heater Upgrade, Safety Shutoff – FWH09AFA-AM
Furrion Tankless Gas Water Heater, White, 2.4 GPM, 60,000 BTU, Antifreeze Protection, Propane w/Electric Ignition, Wall Thermostat, Retrofit RV Water Heater Upgrade, Safety Shutoff – FWH09AFA-AM
Flow Rate: 2.4 gallons per minute
Energy Source: 60,000 BTU gas
Size and Weight: 23 x 17 x 16 inches, 35.2 lbs
Temperature Control: Vortex tech with wall thermostat
Installation and Maintenance: Easy install, upgrade from tank
Safety Features: Pressure relief, auto shut-off, antifreeze
APUS RV Tankless Water Heater, 68,000 BTU Propane Gas On Demand Hot Water with Black Door&Remote, 12V, 3.9 GPM, High Altitude Ready, CSA Certified, Compatible with All RVs,Ideal for RV Family & Camper
APUS RV Tankless Water Heater, 68,000 BTU Propane Gas On Demand Hot Water with Black Door&Remote, 12V, 3.9 GPM, High Altitude Ready, CSA Certified, Compatible with All RVs,Ideal for RV Family & Camper
Flow Rate: 3.9 Gallons Per Minute
Energy Source: Liquid Propane
Size and Weight: 14.18"W x 15"H
Temperature Control: 95 to 124°F, automatic adjustment
Installation and Maintenance: User-friendly, standard fittings, simple connection
Safety Features: Multiple protections including gas leak, pressure
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Up to 10% off
GIRARD Tankless RV Water Heater, 12V Power, 42,000 BTUs, Quiet Operation, Onboard Microprocessor, Digital User Control Panel, Freeze Protection, Easy Installation - 2022107534
GIRARD Tankless RV Water Heater, 12V Power, 42,000 BTUs, Quiet Operation, Onboard Microprocessor, Digital User Control Panel, Freeze Protection, Easy Installation - 2022107534
Energy Source: 12V power
Size and Weight: 12.5"W x 12.5"H x 13.75"D, 22 lbs
Temperature Control: Microprocessor, digital control panel
Installation and Maintenance: Professional installation recommended
Safety Features: Prevents cold spots, scalding
Gen II Ranein RV Tankless Water Heater 65,000 BTU, On-Demand Instant Hot Water, 12V Powered, High Altitude Ready, CSA Approved, Multi-Function Controller, Ideal for Simultaneous Use and Family Use
Gen II Ranein RV Tankless Water Heater 65,000 BTU, On-Demand Instant Hot Water, 12V Powered, High Altitude Ready, CSA Approved, Multi-Function Controller, Ideal for Simultaneous Use and Family Use
Flow Rate: 3.9 GPM
Energy Source: Propane, 12V power supply
Size and Weight: 15" x 15", 5.48 lbs
Temperature Control: 95°F-124°F
Installation and Maintenance: Wall mounting, door kit sold separately
Safety Features: Forced exhaust fan, gas shut-off, anti-freeze
Suburban RV Tankless 42,000 BTU Water Heater - Endless Hot Water Supply, Energy Saving, Digital User Control Center, Designed for Safety, Freeze Protection (ST-42)
Suburban RV Tankless 42,000 BTU Water Heater - Endless Hot Water Supply, Energy Saving, Digital User Control Center, Designed for Safety, Freeze Protection (ST-42)
Flow Rate: 42,000 BTU
Energy Source: Propane
Size and Weight: 12.5"W x 12.5"H, 1 lb
Temperature Control: Digital control, child lock, max 131°F
Installation and Maintenance: Needs specific door, may need pro
Safety Features: Flame out, scald, child lock, freeze
FOGATTI InstaShower 8 Plus RV Tankless Water Heater, 3 Door Size Options (15"x15"/15"x18"/18"x18") for Easy Retrofit, Remote Controller, Propane, Ideal for RV Families & Campers, 12V DC, Gen 3
FOGATTI InstaShower 8 Plus RV Tankless Water Heater, 3 Door Size Options (15"x15"/15"x18"/18"x18") for Easy Retrofit, Remote Controller, Propane, Ideal for RV Families & Campers, 12V DC, Gen 3
Flow Rate: 2.9 Gallons Per Minute
Energy Source: 12 Volts DC
Size and Weight: 15"W x 15"H, 25.7 lbs
Temperature Control: 95°F to 123°F, remote control
Installation and Maintenance: Needs door size, exhaust setup
Safety Features: Anti-freeze, flame, overheat protections
#10
FOGATTI InstaShower Ultra RV Tankless Water Heater, 66,000 BTU (Highest Output), 0.5-3.9 GPM Energy Efficiency, Built-in Mixing Tank, 15x15 Inches Gray Door, Ideal for RVers' Everyday Use, Gen 3
FOGATTI InstaShower Ultra RV Tankless Water Heater, 66,000 BTU (Highest Output), 0.5-3.9 GPM Energy Efficiency, Built-in Mixing Tank, 15x15 Inches Gray Door, Ideal for RVers' Everyday Use, Gen 3
Flow Rate: 3.6 Gallons Per Minute
Energy Source: 12 Volts DC
Size and Weight: 15"W x 15"H, 34.1 lbs
Temperature Control: Precise 1°F adjustment, mixing tank
Installation and Maintenance: Professional install, venting, regular maintenance
Safety Features: Flame failure, oxygen shut-off, overheat
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Buying Guide for the Best Rv Tankless Water Heaters
Choosing the right RV tankless water heater can significantly enhance your comfort while traveling. These devices provide a continuous supply of hot water, which is essential for showers, washing dishes, and other daily activities. When selecting an RV tankless water heater, it's important to consider several key specifications to ensure you get the best fit for your needs. Understanding these specs will help you make an informed decision and enjoy a reliable hot water supply on your adventures.Flow RateFlow rate, measured in gallons per minute (GPM), indicates how much hot water the heater can produce. This is crucial because it determines whether you can run multiple fixtures simultaneously without losing hot water. Lower flow rates (1-2 GPM) are suitable for small RVs or single-use scenarios like a shower. Medium flow rates (2-4 GPM) can handle a shower and a sink at the same time. Higher flow rates (4+ GPM) are ideal for larger RVs or when multiple hot water demands occur simultaneously. Choose a flow rate based on the number of people using hot water and the number of fixtures you plan to run at once.
Energy SourceRV tankless water heaters can be powered by propane, electricity, or a combination of both. Propane heaters are popular for their efficiency and ability to heat water quickly, making them ideal for off-grid camping. Electric heaters are convenient when you have access to shore power but may struggle to keep up with high demand. Combination units offer flexibility, allowing you to switch between propane and electric depending on availability. Consider your typical camping setup and choose an energy source that aligns with your power availability and usage patterns.
Size and WeightThe size and weight of the water heater are important for installation and space considerations in your RV. Compact and lightweight models are easier to install and fit into tight spaces, which is crucial in smaller RVs. Larger units may offer higher performance but require more space and may be more challenging to install. Assess the available space in your RV and ensure the unit you choose can be accommodated without compromising other essential areas.
Temperature ControlTemperature control features allow you to set and maintain your desired water temperature. Basic models may have manual controls, while advanced units offer digital displays and precise temperature settings. Consistent temperature control is important for comfort and safety, preventing scalding or cold water surprises. If you prefer ease of use and precise control, look for models with advanced temperature control features. For those who are comfortable with manual adjustments, simpler models may suffice.
Installation and MaintenanceConsider the ease of installation and maintenance when choosing an RV tankless water heater. Some models come with DIY-friendly installation kits, while others may require professional installation. Regular maintenance, such as descaling and cleaning, is necessary to keep the unit running efficiently. Look for models with accessible components and clear maintenance instructions. If you prefer minimal maintenance, opt for units with self-cleaning features or those that are known for their reliability and low upkeep.
Safety FeaturesSafety features are essential to prevent accidents and ensure safe operation. Common safety features include flame failure devices, overheat protection, and anti-freeze protection. These features help prevent dangerous situations like gas leaks, overheating, and freezing in cold weather. Prioritize models with comprehensive safety features, especially if you plan to use the heater in varying weather conditions or if you have children or pets in the RV.