10 Best Tankless Rv Water Heaters 2025 in the United States

The Fogatti RV Tankless Water Heater is designed specifically for RV users looking for reliable and efficient hot water on the go. It offers a strong flow rate of up to 3.6 gallons per minute, which is enough to comfortably supply hot water to both bathroom and kitchen at the same time without long waiting times. Its 66,000 BTU output ensures quick heating even in colder conditions or higher altitudes, supported by its advanced heat exchange system and weather-resistant build. The unit uses propane fuel, which is common for RV appliances and allows for energy-efficient operation, especially thanks to its ultra-low 0.5 GPM flow startup that saves fuel during low-demand use.

Temperature control is a standout feature here, maintaining water temperature within a tight ±1°F range and adapting flame intensity by season to avoid overheating or under-heating. The built-in mixing tank further smooths out sudden temperature changes, increasing comfort during showers. At 15 by 15 inches and weighing about 34 pounds, it strikes a good balance between compact size and power, making it practical for RV installation. It includes thoughtful extras like a pressure relief valve and remote control for convenience and safety, plus protective features against freezing, flame failure, and oxygen depletion.

Some users might find installation requires professional help if they aren’t comfortable with propane connections and venting. Also, while efficient, the 3.6 GPM flow might be limiting if multiple high-demand appliances run simultaneously. This water heater is well suited for RVers wanting consistent, energy-efficient hot water with good temperature stability and durability for everyday use and varying weather conditions.

The Furrion RV Tankless Gas Water Heater offers a strong 60,000 BTU heating power with a flow rate of 2.4 gallons per minute, which is quite capable for typical RV use, providing hot water steadily even in colder temperatures as low as 32°F. It runs on propane gas with electric ignition, making it a good fit for those who want an efficient and reliable fuel source while on the road. Its Vortex technology helps keep water temperature steady, which means fewer sudden temperature changes during use, and the dual-sensor safety shutdown adds peace of mind by preventing overheating.

This model is designed for easy replacement of older Suburban and Atwood models, thanks to its door mount style and matching dimensions (18.11" x 18.11"), which simplifies installation for many RV owners. It's built to handle rough travel conditions, incorporating vibration-resistant components to endure bumpy rides without damage.

With a weight of about 45.5 pounds and compact size, it balances portability with performance, though it might be a bit heavier compared to some smaller electric models. The heating efficiency is rated as efficient, helping to save propane fuel, but as a gas unit, it requires proper ventilation and maintenance to keep it working well over time. Maintenance is straightforward thanks to its design, but being a gas appliance, users should be comfortable with periodic checks or seek professional help when needed. This water heater is suitable for RV owners looking for a powerful, reliable propane-fueled unit that can replace older models easily and handle varying temperature needs, especially in colder climates. It may not be ideal for those who prefer electric-powered heaters or require extremely lightweight solutions.

The Furrion RV Tankless Gas Water Heater is a solid choice for RV owners who want hot water on demand without the bulk of traditional tanks. It offers a heating power of 60,000 BTU and a flow rate of 2.4 gallons per minute, which means it can provide enough hot water for basic needs like showering and washing dishes, even when outside temperatures drop to freezing. It runs on propane, which is common and convenient for RV setups, and features an electric ignition for easy start-up. The Vortex Technology keeps water temperature steady by mixing it consistently, and built-in safety sensors will shut off the unit if it gets too hot, providing peace of mind.

Its size and weight are reasonable for an RV water heater, and it's designed to replace Atwood models with matching door dimensions, making installation simpler if you’re upgrading. Thanks to Furrion’s VibrationSmart technology, it handles the bumps of the road well without damage. While it has a reliable build, it’s not electric-powered, so you’ll need propane available. Also, the maximum flow rate of 2.4 GPM might be a bit low if you need to run multiple water outlets at once.

Maintenance should be straightforward, but like all propane heaters, regular checks are necessary to keep it running safely. The 2-year warranty adds confidence in its durability. If you want an efficient, durable tankless heater tailored for RV travel with easy retrofit options, this model is worth considering.