10 Best rv tankless water heater (2025)

• POWERFUL PERFORMANCE — At 42,000 BTUs, this continuous hot water heater provides optimal performance for RV plumbing. The quiet, brushless motor runs on 12V power that operates at less than three amps for a nearly noiseless operation
• CONSISTENT TEMP — The onboard microprocessor monitors incoming cold water temperature, flow rate and outgoing hot water temperature to maintain a steady water flow. It also regulates the burner to maintain a consistent temperature, preventing cold spots and scalding water
• HIGHLY EFFICIENT — The Girard RV tankless water heater consumes half the LP gas that a six-gallon tank water heater would consume for the same amount of hot water
• INTELLIGENT CONTROL — With a digital user control panel, you can adjust the temperature setting from 95 to 124°F, toggle between Fahrenheit and Celsius, get a continuous water outlet temperature reading and more. For easy troubleshooting, the control panel also displays error codes if issues arise
• Professional Installation is strongly recommended

• ENHANCED FLAME OUT PROTECTION: The Suburban Tankless RV Water Heater features advanced Flame Out Protection, a critical safety mechanism that instantly cuts the gas supply in response to low propane pressure or burner malfunction, ensuring your safety and peace of mind.
• SCALD PROTECTION: Equipped with an internal high-temperature kill switch, this tankless water heater provides reliable Scald Protection. This essential feature safeguards against thermostat malfunctions, maintaining a maximum water temperature of 131° F for safe and comfortable use.
• SAFE CHILD LOCK FEATURE: Designed with families in mind, the Suburban Tankless RV Water Heater includes a child lock that prevents outlet temperatures from exceeding 113° F. This feature ensures enhanced safety by protecting children from accidental scalding.
• SAVES ENERGY: The tankless feature saves energy by only engaging the burners when water is needed…be it for a hot shower, clean dishes or for hosing off after a day at the beach. The unit comes ready for set-up with an included wall mount digital control center. 6285APW or 6285AEB door is required for installation, sold separately.
• FREEZE AND VOLTAGE PROTECTION: This water heater includes Active Freeze Protection, which activates in low temperatures when power and propane are available, preventing freeze damage. Additionally, Voltage Protection shuts down the unit in case of low/high or overcurrent voltage, ensuring reliable and worry-free performance.

• 【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
• 【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
• 【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.

• Rapid Instant Heating: The RV water heater offers 42,000 BTU of high power, delivering hot water quickly to meet your needs for showering, dishwashing, and more. The RV water heater is CSA certified and has multiple protection features for peace of mind
• All-Season Use: Featuring segmented combustion technology, it adjusts water temperature according to seasonal changes, ensuring comfortable hot water year-round. This energy-saving feature prevents excessively high water temperatures in summer, making it more eco-friendly.
• Convenient Control: Equipped with an LED smart display and touch controls, the rv tankless water heater allows easy temperature adjustment and power control, offering hassle-free operation and effortless monitoring.
• Outdoor Water Outlet: In addition to an internal outlet, this RV water heater is equipped with a front outlet for outdoor use, perfect for washing pets, vehicles, and more. Enjoy added convenience for all your outdoor adventures.
• Compatible with Most RVs: With a door size of 15x15 inches, a rear chamber size of 12.6x12.6x14 inches, and 1/2" NPT water and gas connectors, plus a φ2.36" exhaust pipe, this camper water heater is designed to suit various RVs. Quick connections make setup a breeze!

• 【Unprecedented experience】The high altitude suitability mode allows the machine to run smoothly even when driving the caravan to the high Denver plateau at 9,800 feet. Staged combustion technology, which controls the amount of flame in summer, prevents the water from getting too hot and saves the limited propane gas available for caravan travel.
• 【All RV water heaters can be replaced】The Fogatti RV water heater have a wide range of applications. The opening is 13 x 13 inches and the door is 15 x 15 inches. It can replace Suburban and Atwood's 6 gallons tank water heaters, as well as Girard and Furrion's tankless water heaters. If you previously used a 10 gallons tank water heater, it would need to be retrofitted with an 18 x 18 inches door.
• 【Incessant hot water】With 55,000 BTU of power, it can produce a maximum of 2.9 GPM of hot water. Some tank heaters can only store up to 6-10 gallons of hot water and run out of hot water in 5-8 minutes, whereas our hot water supply lasts over 40 minutes.
• 【No waiting】RV tankless water heaters are taking off. Tankless water heaters are better than tanked water heaters for continuous showering of multiple people. There is no need to waste 20-30 minutes waiting for hot water in the middle of the shower, so you can enjoy hot water at all times. It uses propane for heating, so there is no need to worry about running out of power in your caravan.
• 【Save money and trouble】Fogatti has always thought of you, with a pressure relief valve built into the product, so you don't have to buy and install it separately. And it also comes with a 15 x 15 inches door and an intelligent remote controller up to 2 meters long.

This Poukaran RV Tankless Water Heater, 55000 BTUs RV Instant Hot Water Heater with 15 x 15 inches Door & Remote Controller, DC 12V MAX 3.9GPM, Propane Gas Power Technology, Compatible with All RVs (White) is a top choice in . Customers appreciate its quality, performance, and value.

• Compatible with All RVs — The KINGRVER RV tankless water heater opening size is 12.7" x 12.7". The fitting door kit is available for purchase in 3 optional sizes: 15" x 15", 15" x 18", or 18" x 18". It is easy to replace Suburban, Dometic, and other RV tank/tankless water heater. We also offer customizable EVA Filling Blocks to fit oversized cutouts, ensuring stability and preventing movement of the water heater. They are waterproof and corrosion-resistant. Check our bundles for combination purchase options for easier refitment.
• Endless Hot Water Supply — The heat output is enough to supply an entire RV with endless hot water, like other higher BTU models, and also save propane. The KINGRVER tankless RV water heater effortlessly supports multiple hot showers and dishwashing without preheating. The Adjustable Temperature ranges from 95°F-123°F.
• High altitude Application — The KINGRVER RV on-demand Water Heater can operate at above 5000 ft high altitudes. It accommodates the low-oxygen conditions experienced at such elevations. Staged combustion technology modulates the flame intelligently based on seasonal factors, keeping water temperatures steady while reserving limited propane for travelers navigating the region's elevated terrain by caravan. The combined effects deliver an unprecedented high-altitude travel experience.
• Built-In Safety Measures — A forced exhaust fan ensures stable combustion. A 150PSI pressure relief valve ensures safety. Plus, automatic gas shut-off protects against accidental flame loss. An anti-freeze device protects against low temperatures that could cause freezing. It automatically activates when sensing below 42.8°F, keeping water thawed. Safety and reliability are built in from the top down.
• Certified Quality and Expert Support — The KINGRVER RV water heater is CSA-certified and has 2 Years of service. We have a 7x24 professional Technical Support team. If you have any questions, please feel free to contact us. From installation guidance to troubleshooting, we provide detailed assistance to ensure your water heater works perfectly.

• Instant Hot Water Supply - RV tankless water heaters are better than traditional tank water heaters by delivering a constant, uninterrupted stream of hot water for multiple showers without preheating. RV tankless water heaters eliminate the frustrating 20 to 30 mins waiting time for hot water during your shower, ensuring you can enjoy hot water whenever needed.
• Super High Efficiency - JOVJOYER RV WATER HEATER Energy efficient, plenty of hot water, provide hot water anytime, anywhere, save time, no standby energy loss of storage water heater, 2.9 GPM instantaneous gas tankless water heater, maximum power output 55,000 btu/hour, no matter what location you are in, even high altitude mountains 9800Ft, as long as there is enough gas and water, it can provide you with hot water at any time.
• Constant Water Temperature - This tankless water heater for RV is equipped with high efficiency heating coils and intelligent temperature control, ensures 85% heating efficiency while minimizing electricity and propane consumption by 40%. Its graded fine-tuning combustion system allows precise flame control, you decide the water temperature between 95 and 123°F, and it will be maintained stable and does not rise or fall suddenly. The water needs to flow for seconds for the heater to detect flow and start the fan and burner.
• Comprehensive Safety Features - Your safety is our priority. Our RV tankless water heater features a built-in forced exhaust fan, stable combustion, automatic gas shut-off in case of accidental flame failure, and anti-freeze protection. You can enjoy hot water worry-free.
• Versatile Compatibility - Our RV tankless water heater is designed to fit most RVs with a 13" x 13" opening and a 15" x 15" door. Installation is a breeze with detailed tutorials and product dimensions provided. Plus, it comes with a built-in pressure relief valve and remote control, eliminating the need for separate purchases.

• Instant Hot Water Supply- OEVANT 55,000 BTU RV Water Heater provides a constant flow of hot water for multiple showers without preheating. The RV water heater reaches 51°C in less than 25 seconds. Save time and don't wait too long for warm water!
• High-Performance Technology-RV water heater uses advanced staged combustion technology to keep water temperatures stable and prevent overheating, ensuring comfortable and efficient hot water on all your adventures.Moreover, OEVANT RV water heater uses propane for heating, so you won't be worried about running out of electricity in your RV.
• User Friendly Operation - Adjusting the temperature is easy with the built-in microcomputer control panel, which allows you to set the temperature anywhere between 95 and 123 degrees Fahrenheit. It also provides error codes for easy troubleshooting
• Compact and Convenient - The OEVANT RV Water Heater is compact and lightweight with a 16‘ x 16’ door and 13‘ x 13’ opening, and a front-mounted water outlet that makes showering, rinsing, and pet bathing easy!
• Safety and Reliability - OEVANT RV water heaters offer protection in all situations to ensure top safety and reliability, giving you peace of mind, including a built-in forced exhaust fan, stable combustion, anti-freeze protection and automatic gas shut-off in the event of an accidental flame failure.

• 【Exceptional Performance】This RV water heater boasts a high-altitude mode, ensuring reliable operation even when traveling to destinations with elevations up to 9,800 feet, like the Denver area. Its staged combustion technology can adjust the flame intensity during summer, preventing water from overheating and optimizing propane gas consumption during your vehicle's travels.
• 【Universal RV Compatibility】With its 12.7 x 12.7 inch opening and 15 x 15 inch door, this water heater can seamlessly replace Suburban, Atwood, Dometic, and other leading RV water heater models. Its vibration-resistant and low-noise design is perfectly tailored for the RV lifestyle
• 【Instant Hot Water at Your Fingertips】Delivering a powerful 68,000 BTU output, the ELEISIOS RV water heater can provide a remarkable 3.9 gallons per minute of hot water. With an adjustable temperature range from 95°F to 123°F, this tankless model eliminates the need for preheating or wait times. You can enjoy a constant, comfortable flow of hot water whenever you need it, 24 hours a day.
• 【Certified for Safety】The ELEISIOS RV water heater is CSA-certified, featuring a brushless motor-driven exhaust fan that guarantees efficient combustion. In the rare event of an unexpected flame-out, it will automatically cut off the propane gas supply. Moreover, it triggers self-heating when temperatures dip below 42.8°F, safeguarding against freezing
• 【All-in-One Solution】The ELEISIOS tankless RV water heater comes equipped with a pressure relief valve, gas hose, remote installation bracket, a unique 15 x 15 inch door design, and a 6.6 ft PC smart remote control. You don't need to purchase any additional items.