Hi my name is Wil,
I just bought a house that was built in 1974. It also appears that the heat pump was installed around the same time. The unit uses lp gas to heat. What is more efficient, electric or lp gas heat. We will be replacing the unit soon for a more efficient unit, and the upstairs unit is already completely electric. Just needing some informed information or maybe some ideas I have not already thought about. Thanks

You will need to check local utilities for costs per unit,its different in each area and state, in most places gas is cheaper