Quick Answer
Mini split heat pumps can save homeowners up to 60% on their propane heating bills compared to traditional propane systems, and up to 30% on their electricity bills compared to standard electric heat pumps. They are particularly beneficial for off-grid homes powered by solar energy.
Energy Efficiency Comparison
Mini split heat pumps are highly efficient, typically with a SEER (Seasonal Energy Efficiency Ratio) of 20-24 and a HSPF (Heating Seasonal Performance Factor) of 12-14. In contrast, propane furnaces have an AFUE (Annual Fuel Utilization Efficiency) of around 80-90%, while traditional electric heat pumps have a SEER of 12-18. This means that for every unit of energy consumed, mini split heat pumps can provide 2-4 times the amount of heating or cooling as propane furnaces and 1.5-2 times as much as electric heat pumps.
Power Requirements for Off-Grid Operation
To operate a mini split heat pump on an off-grid solar-powered system, you’ll need to consider the inverter size and battery bank capacity. A typical mini split heat pump requires 1-3 kilowatts of power to operate, depending on the model and heating/cooling capacity. With a 5-kilowatt solar array and a 12-kilowatt-hour battery bank, you can expect to have enough power to run a single mini split heat pump for 4-8 hours on a sunny day. This makes them an ideal choice for small to medium-sized off-grid homes, especially those with moderate heating and cooling needs.
Find more answers
Browse the full Q&A library by topic, or jump back to the topic this question belongs to.