I have a 2000 sq ft tri level house. I bought the house 10 years ago. There is a water furnace that takes care of the mid and lower level, around 1200 sq feet. The upstairs 3 bedrooms and 2 baths are on a heat pump that was replaced just before I bought the house. The geo stopped working in April due to the coil leaking refrigerant. $2000 to replace the coil, the unit is 20 years old so was advised to replace for around $10,000. I am planning on selling the house this or next year. Does it make sense to have the geo only supplying part of the house? I live in NW Ohio where the winters can be quite cold so the heat pump has to rely on the aux backup if I run it. If I was going to stay and had the money I think would install geo for the whole house. If I was going to stay in my current situation I would be tempted just to put a gas furnace in and a window air for the lower level. Trying to decide on what to do. Thanks for any input.