Best Brands for Off-Grid Propane Tankless Water Heaters?

Off-Grid Propane Tankless Water Heater Options

When choosing a propane tankless water heater for off-grid use, it’s essential to consider the water heater’s BTU rating and capacity. A general rule of thumb is to select a unit that can produce 4-5 gallons of hot water per minute (GPM) for a standard household. For example, the Ecco ECO 18, a popular choice, has a 180,000 BTU output and can heat 4.5 GPM.

Sizing and Venting Considerations

Accurate sizing and proper venting are crucial for optimal performance and efficiency. A larger unit can lead to wasted energy and increased cost. For off-grid applications, consider a unit with a built-in venting system, such as the Noritz NRCB199-DV, which features a 199,000 BTU output and a compact design. When sizing, consider the number of fixtures and the desired temperature rise. A common rule is to add 1 GPM for each shower head, sink, and washing machine.

Freeze Protection and Demand

Freeze protection and demand management are critical for off-grid propane tankless water heaters. Consider a unit with a built-in freeze protection feature, such as the Takagi TK-RH-S, which has a 180,000 BTU output and a freeze stat that automatically shuts off the unit in extreme cold. Demand management can be achieved by using a tankless water heater with a built-in recirculation pump, which can help maximize efficiency and reduce energy consumption.