I have been without air for a few days and need a new unit. My old unit is about 20 years old and I am really not interested in trying to fix the old one. I have a company that only offers Goodman brand and they can do it this week. The price is fine even lower then expected but I know nothing about HVAC so... its a single 13 sear 3.5ton unit with a 4 ton condenser. I have another company coming out tomorrow that offers Armstrong and Trane, maybe Ducane.