I have a Westinghouse 93% efficient gas furnace with an outdoor air conditioning compressor. The A coil is above the furnace. I would like to change the outdoor compressor to a heat pump and use the gas furnace only as a back up heat source if the heat pump can't keep up. I live in San Jose, CA.
I have a 7,500 watt photovoltaic system on my roof so all my electricity is free. I am trying to convert all of my gas appliances to electricity.
Can I change the AC compressor to a heat pump? Can I use the same A coil? Will I need a special thermostat or other controls to make it work properly?
Thanks in advanced.