Heating

Stay Warm on the Water and on the Road

Whether you're campervanning through a cold mountain pass or extending your boating season into late fall, a reliable heating system is one of the most essential comfort and safety investments you can make. RV and marine heaters aren't one-size-fits-all — they're purpose-built for the unique demands of mobile living and life on the water, where space is tight, power sources vary, and temperatures can swing dramatically between day and night.

Types of RV & Marine Heating Systems

Understanding the different heater technologies helps you match the right system to your rig or vessel:

• Propane/gas furnaces: The most common choice for RVs, these ducted systems distribute heat throughout the cabin and can operate independently of shore power using a 12V DC blower motor.
• Engine heat exchanger systems: Popular in marine applications, these systems tap into the engine's coolant loop to deliver cabin heat — Heater Craft is a leading specialist in this technology.
• Combi heaters: Advanced units that provide both space heating and hot water from a single appliance, maximizing efficiency in compact spaces.
• Electric supplemental heaters: Ideal for shore-power hookups, wall-mounted units can reduce how often your primary furnace cycles on.

What to Consider When Shopping

BTU output, fuel type, ducting flexibility, and compatibility with your existing propane or electrical system are all critical factors. For boats, you'll also want to confirm whether a heater is designed for inboard/I-O engines or raw-water cooling systems. Safety certifications — including USCG compliance for marine applications — should never be overlooked.

Top Brands in RV & Marine Heating

This category is anchored by a handful of manufacturers who have earned their reputations over decades of real-world performance.

Dometic is the dominant force in this space, offering a comprehensive lineup of RV furnaces, combi heaters, and water heaters engineered for life on the move. Dometic's heating solutions range from compact furnaces for travel trailers to full water heating systems wrapped in high-quality thermal insulation — all engineered for easy maintenance and reliable air delivery in any season.

Suburban Mfg has been a cornerstone of the RV heating industry since the late 1960s, pioneering technologies like space-saving horizontally vented gas heating systems and efficient DC furnace motors. Their products are widely regarded for adherence to strict safety and quality standards and rugged durability that holds up across years of RV use.

Heater Craft specializes in engine-coolant marine cabin heaters — an elegant solution that converts your boat's waste engine heat into usable warmth. Their American-made kits meet stringent USCG standards and are designed for inboard and I/O engine boats, with complete kits that include everything needed for a clean, permanent installation.

Xtreme Heaters rounds out the category with compact electric heating options well-suited for marine and RV applications where a supplemental or portable heat source is needed alongside a primary system.