10 Best Rv Tankless Water Heaters 2025 in the United States

The FOGATTI RV Tankless Water Heater, InstaShower 8 Plus, is designed with RV enthusiasts in mind, particularly benefiting those who travel to high altitudes. One of its standout features is its capability to function effectively at elevations up to 9,800 feet, which is a significant plus for campers heading to mountainous regions. With a flow rate of up to 2.9 gallons per minute and a powerful heat output of 55,000 BTU, it ensures an uninterrupted supply of hot water, allowing multiple users to shower without running out of hot water quickly—a common issue with traditional tank heaters.

Installation is straightforward, as it can replace various existing water heaters, making it a versatile choice for RV owners looking to upgrade. The inclusion of a pressure relief valve and a wired remote controller further adds convenience, allowing control from a distance.

On the safety front, being CSA certified, it features several protective measures including anti-freezing protection, overheat protection, and an automatic gas shut-off, enhancing user confidence during use. This makes it a reliable option for those concerned about safety while on the road. However, there are some considerations to keep in mind. While its performance is commendable at high altitudes, the reliance on propane means users need to manage fuel levels, which could be a hassle during long trips. Additionally, while it excels in continuous hot water supply, potential users should ensure their RV's plumbing can handle the maximum flow rate without issues.

The Ranein 65,000 BTU RV Tankless Water Heater is a solid choice for RV owners looking for instant hot water. It offers a high flow rate of up to 3.9 GPM, ensuring a consistent supply of hot water on demand, ideal for those who dislike waiting for water to heat up. The unit is powered by propane and requires a 12V power supply, making it compatible with all RVs, though it's not electric. The heater's compact dimensions (15" x 15") facilitate easy installation, especially since it can replace various sizes of existing tank water heaters with appropriate door kits (sold separately).

The inclusion of a multi-function remote control allows users to monitor gas usage, voltage, and other parameters, which can be very convenient. Additionally, the product features staged combustion technology to maintain a steady temperature range of 95°F-124°F, enhancing comfort and propane efficiency. Safety features are robust, including a built-in forced exhaust fan for stable combustion, automatic gas shut-off for flame failure, and an anti-freeze device that activates at low temperatures.

However, the need to purchase the door separately adds to the cost and complexity of installation. The built-in pressure relief valve, CSA certification, and professional customer service are added benefits. This water heater is best suited for RV owners seeking a reliable, high-performance tankless water heater that offers advanced control and safety features.

The Furrion® RV Tankless Gas 60,000 BTU Water Heater is designed specifically for RVs, offering a good balance of power and efficiency. With a high heating power of 60,000 BTU and a flow rate of 2.4 gallons per minute (GPM), it ensures a steady supply of hot water, even in colder conditions. The propane gas-powered technology and electric ignition make it reliable for on-the-road use.

The Vortex technology helps in maintaining consistent water temperatures, which is crucial for comfort, and dual sensors provide overheat protection for safety. This model is especially convenient for those looking to replace Suburban 4/6 Gallon water heaters, thanks to its retrofit design and compatible door dimensions. The Furrion VibrationSmart technology enhances its durability against road vibrations, making it a robust choice for RV users.

The installation process is relatively simple with the provided wall controller and documentation, although the unit's weight of 43.7 pounds may require some effort during setup. Covered by a 2-year warranty, the Furrion water heater offers peace of mind regarding its longevity and reliability. However, it's worth noting that maintaining consistent performance may require regular maintenance checks, especially given its high heat output. This water heater is a solid choice for RV owners seeking a powerful, reliable, and temperature-consistent solution with essential safety features.