10 Best Rv Tankless Water Heaters 2026 in the United States

The FOGATTI InstaShower 8 Pro is a solid choice for RV owners who want a reliable tankless water heater. It produces a steady flow of hot water at 2.9 gallons per minute, enough for comfortable showers without running out mid-use. Powered by propane and running on 12V DC, it ensures you have hot water even when off-grid, which is great for extended trips. The heater is designed to work well at high altitudes (up to 9,800 feet), making it versatile for mountain camping.

Its size (15x15 inches) fits well for replacing many common 6-gallon tank units, though if you have a larger 10-gallon system, modifications will be needed. Temperature control is precise, with safety features like anti-freeze protection, automatic gas shut-off, and filters that help keep the system running smoothly. Installation is made easier by including necessary parts like a pressure relief valve and a remote controller for convenient operation. However, the unit isn't smart-home compatible and the decorative frame is somewhat larger, which might require extra space.

Though it’s not the lightest or smallest model, the build quality and safety certifications make it dependable. For those seeking continuous hot water with minimal wait and a system that can handle different climates and altitudes, the FOGATTI InstaShower 8 Pro provides a good balance of performance and safety for everyday RV use.

The Fogatti InstaShower 8 Pro is a solid choice for RV owners looking for continuous hot water without the limits of traditional tank heaters. It delivers a strong flow rate of up to 2.9 gallons per minute powered by propane, which means you can shower comfortably without running out of hot water. Its 60,000 BTU heat output ensures quick heating even at high altitudes, making it ideal for users who travel to mountainous areas up to nearly 10,000 feet. The unit is compact with a 15x15 inch door size, fitting many common RV heater openings and can replace several popular brands, which makes installation easier if you’re upgrading. The included wired remote controller adds convenience by letting you adjust temperature settings from up to 2 meters away.

Safety is well covered with features like flame failure protection, anti-freeze safeguards, a built-in exhaust fan, and a pressure relief valve included with the heater to avoid extra purchases. Maintenance is simplified by a filter screen that protects against dust and sand clogging the system. On the downside, it runs solely on propane and 12V DC power, so it’s not compatible with electric-only setups or smart home systems. Also, retrofitting may be needed if upgrading from larger tank heaters, which could add installation complexity. While the maximum temperature tops out at 123°F, which should be sufficient for most users, those wanting hotter water might find it limiting.

If you need a reliable, efficient, and safe tankless water heater for family RV use that supports high-altitude adventures and comes ready to replace common existing units, the Fogatti InstaShower 8 Pro is worth considering. Just be mindful of your RV’s power setup and the space requirements before purchasing.

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.