Can You Use a Propane Tankless Water Heater for Off-Grid RV Living?

Choosing the Right Size

When selecting a propane tankless water heater for off-grid RV living, sizing is critical. A general rule of thumb is to choose a unit that can handle 2-4 gallons per minute (GPM) of hot water. For a small RV, a 2-3 GPM unit may be sufficient, while a larger RV may require a 4-5 GPM unit. Be sure to consider the number of occupants, showering habits, and washing machine usage when determining the required GPM.

Venting and Installation

Proper venting is essential for safe and efficient operation of a propane tankless water heater. You’ll need to install a suitable venting system, such as a stainless steel vent pipe, to ensure safe combustion and ventilation of combustion gases. Additionally, ensure the unit is installed in a well-ventilated area, away from any living spaces or flammable materials. Follow the manufacturer’s instructions and local building codes for proper installation and venting.

Freeze Protection and Demand

Freeze protection is also crucial in cold climates, where temperatures can drop below freezing. Look for a unit with built-in freeze protection or consider installing a freeze-proof vent kit. To optimize demand, consider installing a thermal mixing valve, which can preheat the incoming cold water, reducing the demand on the tankless water heater. This can be especially beneficial in cold climates, where the tankless unit may not be able to produce enough hot water to meet demand.