I need help deciding whether to get a 10 Seer or a 14 Seer Trane air conditioning unit. I live in Georgia, so the summers are hot.
My question is should I get a 10 Seer or 14 Seer. If I go with the 10 Seer, do I get a new coil or keep the existing coil, which is about 23 years old. (The furnace is about 4 years old.)