10 Best Camping Water Heaters 2026 in the United States

The Rinnai RX160iN tankless water heater is a versatile option for camping or outdoor use, as it can run on natural gas or propane, giving you flexibility depending on your fuel availability. Its flow rate of up to 9 gallons per minute means it can supply hot water to multiple fixtures simultaneously, which is quite powerful for camping or RV setups needing consistent hot water. The unit’s heating capacity is strong at 160,000 BTUs, and it can heat water up to 140°F, ensuring rapid warming even in cooler environments. While it’s compact—about the size of a small suitcase and weighing 54 pounds—it isn’t very lightweight for backpacking but is manageable for RV or campsite installations where portability is moderate.

The CAMPLUX Battery Powered Portable Water Heater, Nano 3 Pro, is designed for outdoor enthusiasts who value the comfort of hot showers while camping or hiking. Weighing just 13.7 lbs, this unit is lightweight and portable, making it easy to transport to various locations. One of its standout features is the instant heating capability, allowing users to enjoy warm showers within seconds. With a maximum water flow rate of 3 gallons per minute and a heating capacity of 20,500 BTUs, it provides an efficient solution for outdoor washing needs.

The CAMPLUX 2.64 GPM Propane Portable Gas Water Heater is a solid choice for campers and outdoor enthusiasts looking for a reliable source of hot water. With a maximum power output of 68,000 BTU, it provides instant hot water at a flow rate of 2.64 gallons per minute, making it suitable for showers and washing dishes while camping. Its CSA safety certification, along with features like flame failure detection and overheat protection, ensures a level of safety that is crucial when using gas appliances outdoors.