10 Best Camping Water Heaters 2025 in the United States

The Rinnai RE199eN is a natural gas tankless water heater designed for outdoor use, making it a strong option if you need reliable hot water while camping or for other outdoor activities. It delivers a high heating capacity with 199,000 BTUs and can provide up to 9.8 gallons per minute, which means it can easily supply hot water to multiple faucets or showers at the same time. This makes it suitable for larger groups or setups where several people might need hot water simultaneously.

Since it runs on natural gas, it’s efficient for extended use but requires access to a gas supply, which might not suit all camping locations. The unit is fairly compact, about the size of a small suitcase and weighing around 53 pounds. This makes it portable enough to move or install outdoors but less ideal if you’re looking for a lightweight, backpack-friendly heater.

In terms of ease of use, the heater features an LED display that shows service reminders and error codes, helping with maintenance and troubleshooting. Installation is recommended to be done by a professional, so it’s not a simple plug-and-play device, which could be a downside if you want something ready to go without expert help. The unit includes standard built-in safety protections common in tankless water heaters, and its outdoor design helps prevent indoor gas or vapor buildup. It also conserves energy by only heating water when needed.

If you want steady, on-demand hot water outdoors and have access to natural gas and professional installation, the Rinnai RE199eN offers powerful heating and good flow rates. However, if your camping spot lacks gas or you prefer ultra-portable gear, a smaller propane or electric model might be more convenient.

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.

Portability is a significant strength here, as it includes two durable handles for easy carry. The device supports multiple charging options, such as a built-in 4,000 mAh battery, which can provide up to 100 minutes of use when fully charged. The fact that it can charge during operation adds to its convenience.

Safety features such as flame failure protection and low water flow protection are commendable, but users should still exercise caution, particularly in ensuring the unit is set up correctly to avoid mishaps. The maximum temperature of 122°F might not be sufficient for everyone, especially on colder days.

The CAMPLUX Tankless Water Heater is a portable propane-powered unit designed specifically for outdoor use, such as camping. It offers decent heating performance, producing up to 1.32 gallons of hot water per minute, with a temperature increase of about 115°F at its peak flow rate. This makes it suitable for quick warm showers or washing tasks when off-grid. It runs on propane and requires two size D batteries for ignition, which means you don’t need electricity, adding convenience for remote locations.

Weighing just 10 pounds and featuring a compact design with a folding handle, it’s easy to carry and set up in under 10 minutes. The package includes a shower head, gas regulator, garden hose, and installation hardware, so you get most of what’s needed to start using it right away. Safety is well-handled here, with six built-in protections like flame failure, overheating, low water flow, and anti-freezing, plus it has CSA certification, which ensures it meets recognized safety standards.

This CAMPLUX model is a solid choice for campers or anyone needing a lightweight, portable propane water heater with reliable safety features and decent heating capacity. Its ease of use and included accessories make it beginner-friendly, though it’s best suited for small-scale outdoor water heating rather than heavy or indoor use. The flow rate is modest—while good for outdoor showers, it might not be ideal if you need a higher water volume quickly. Also, it requires careful winter care, as freezing can damage the heater and is not covered by the warranty. Installation must be done carefully to avoid gas leaks, and the heater is mainly intended for outdoor use unless you have proper indoor ventilation and a flue pipe.