APUS RV Tankless Water Heater 80,000 BTU Propane, Black Door 5 GPM, 12V Remote, High-Altitude Ready

The APUS RV Tankless Water Heater delivers continuous on-demand hot water for RVs using 80,000 BTU propane power, a 5 GPM flow rate, and a user-friendly remote control.

Built for life on the road, this compact propane tankless water heater fits most 13" × 13" RV wall cutouts and runs on 12V power to provide rapid hot water without a storage tank. It uses staged combustion to balance fuel use and heating output, supports reliable ignition down to 0.55 GPM, and includes multiple safety systems and altitude-capable performance up to 10,000 feet. The unit is CSA certified and includes automatic anti-freeze protection for colder conditions.

How quickly will I get hot water in my RV?

The APUS unit supplies up to 4.8–5.0 gallons per minute of hot water on demand, so showers and sinks heat almost instantly compared with tank systems. Intelligent staged combustion and a low ignition flow ensure consistent startup even at low flow rates.

• Up to 5 GPM continuous hot water for simultaneous use.
• 0.55 GPM ultra-low ignition flow for dependable starts.
• Staged combustion adjusts flame for steady temperature delivery.
• No storage tank wait time—hot water on demand.

Will this heater fit my RV and what are the installation basics?

This model is designed to match the common 13" × 13" exterior wall opening used in many RVs and travel trailers. The compact footprint (14.96" × 14.96" × 14.18") and 12V control make it straightforward for standard RV installations, but always confirm your cabinet clearance and cutout before purchasing.

• Fits typical 13" × 13" RV wall cutouts; check your opening first.
• Compact dimensions simplify placement and cabinet fitment.
• 12V wired remote included for inside temperature control.
• Compatible with campers, motorhomes, and travel trailers.

How does it perform in mountains and cold weather?

The APUS heater is engineered for use from sea level up to 10,000 feet, with combustion controls that automatically adapt to changing altitude and ambient conditions. Built-in anti-freeze protection activates below 35.6°F (2°C) and multiple safety systems protect the unit during low-temperature operation.

• Reliable operation up to 10,000 ft altitude.
• Automatic flame and combustion adjustments for thin air.
• Auto anti-freeze protection to safeguard internal parts.
• Forced exhaust fan improves combustion stability in varying climates.

What safety and efficiency features should I expect?

Safety and efficient fuel use are priorities: CSA certification and protections like flame failure, dry-burn, over-temperature, gas leak detection, pressure relief, and airflow monitoring are built into the design. Staged combustion reduces propane consumption by supplying only the fuel required for current demand.

• CSA-certified with multiple built-in safety systems.
• 203 PSI pressure relief valve and flame-failure shutdown.
• Smart staged combustion lowers propane use and costs.
• Continuous temperature monitoring ensures stable output.

Who is this for: The APUS RV Tankless Water Heater is aimed at RV owners, full-time travelers, and weekend campers who want dependable, space-saving on-demand hot water with manageable propane consumption and broad altitude capability. It suits anyone replacing a tank-style RV heater or upgrading to a compact propane-on-demand system, provided the RV has the standard 13" × 13" cutout and a 12V supply for the controller.