10 Best Rv Hot Water Heaters 2025 in the United States

The SUBURBAN MFG Suburban 5240A Water Heater is designed for RVs, boasting a 6-gallon capacity which is a standard size for such vehicles. Its dual-fuel type (electric and gas) offers flexibility depending on available resources. The fast recovery rate promises quick reheating of water, a significant benefit during extended usage. The ignition system is Direct Spark Ignition (DSI), which ensures reliable startups and ease of use.

The installation dimensions are compact (12.75” x 12.75” x 19.19”), making it suitable for tight spaces in RVs, and it includes a convenient exterior gas line connection for straightforward setup. The porcelain-lined steel tank offers durability and an anode rod to prevent corrosion increases its lifespan. However, at 36 pounds, it might be a bit heavy for some users to handle during installation.

With a wattage of 1440 watts and a heat output that supports a maximum flow rate of 16.2 gallons per minute, it performs well for most RV needs. Its energy efficiency is reasonable, but possibly not the highest in the market. The one-piece metal control housing is a nice touch to protect controls from weather conditions. Despite its benefits, those looking for a lightweight and highly energy-efficient option might need to consider other products. This unit is a solid choice for RV owners looking for a reliable, durable water heater with decent performance.

The Suburban MFG 5242A SW10D is a 10-gallon direct spark RV hot water heater. It runs on propane with an input of 12,000 BTU/hour, which is a common and efficient fuel source for RVs. With a recovery rate of 10.2 gallons per hour, it can quickly reheat the water, making it suitable for multiple showers or usage in a short amount of time.

The dimensions (16.22 inches in height and width, and 20.5 inches in depth) make it relatively compact, and it is designed for floor mounting, which should simplify installation for most RV layouts. Weighing 45.2 pounds when empty and 126.2 pounds when full, it is manageable for installation and daily use. The advanced corrosion protection and exclusive heat transfer technology are notable features that enhance durability and efficiency.

However, its maximum flow rate of 0.17 gallons per minute may be a limitation for those requiring higher water flow. Additionally, it is worth noting that it is not electric, relying completely on propane. Customer reviews rate it highly at 4.3 out of 5 stars, indicating general satisfaction with the product. It is a solid choice for RV owners looking for a reliable and efficient hot water solution, but those needing higher water flow or preferring electric options might need to consider alternatives.

The Suburban Advantage RV Tank Water Heater SW6D is a solid choice for RV owners looking for a reliable hot water solution. With a capacity of 6 gallons, it caters well to smaller RVs or camper setups, providing enough hot water for basic needs such as showers and dishwashing. The direct spark ignition (DSI) system is user-friendly, allowing you to control the heater from a remote switch, making startup convenient, especially during cold mornings.

One of its notable strengths is its recovery rate of 10.2 gallons per hour, which means that hot water is replenished quickly after use, ensuring that you’re not left without hot water during peak times. The compact size (12.75” x 12.75”) makes it relatively easy to install in tight spaces, a common challenge in RV setups.

The maximum flow rate of 0.17 gallons per minute might be limiting for larger families or those who require multiple hot water outlets to work simultaneously. Additionally, while 12,000 BTU input is decent, some users may prefer higher output for quicker heating in larger setups or colder climates. The weight of the unit, 33.3 lbs empty and 81.9 lbs full, is manageable but could be a concern for those looking to minimize overall weight in their RV. It lacks an indicator light, which could lead to uncertainty about the operational status of the unit. The Suburban SW6D is well-suited for those with smaller RVs looking for efficient, easy-to-use hot water heating, balancing good recovery rates with a compact design, though larger hot water demands might find its flow rate a bit lacking.