I have a Arcoaire gas furnance mod. GUAO80A012AIN an I want to add an A coil an condenser unit to it . It's for my sister in Butler Pa. an i'm in Phonex Az. I would like to keep every thing the same brand to make it simple to hook up. Where in Butler do they handle Arcoaire? I'm going back the end of May an would like to have everything lined up before hand. HELP!