Quick Answer
Propane heating is generally more expensive than electric heating for off-grid homes, with propane costs ranging from $1.50 to $3.00 per gallon and electric costs ranging from $0.10 to $0.30 per kilowatt-hour. However, propane heating can be more efficient, especially in well-insulated homes. Electric heating often requires more complex systems, including heat pumps.
Propane Heating Considerations
Propane heating is a popular choice for off-grid homes due to its high efficiency and versatility. A well-insulated home can achieve efficiencies of 90% or higher with propane heating, compared to 50-70% for electric heating. A propane-powered water heater and space heater combo unit, such as the 40-gallon Rheem RTEX, can cost around $1,000 and achieve a 96% AFUE (Annual Fuel Utilization Efficiency).
Electric Heating Options
Electric heating is less expensive upfront but often requires a more complex system, including a heat pump or resistance heating. A 3-ton heat pump, such as the Coleman 3-ton 410A, can cost around $1,500 and achieve an SEER (Seasonal Energy Efficiency Ratio) of 13. To offset the higher costs of electric heating, homeowners can consider using off-grid power sources, such as solar panels or wind turbines, which can reduce the overall cost of electricity.
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