I have a Trane XL80 100K furnace, a 4 ton evap coil and a 3.5 10 seer outside condenser, running Freon 22, Can I upgrade to a 16 Seer 410a 4 ton condenser? Can the old Freon/oil be cleaned out or do I have to stay with Freon 22?:confused:
Thanks,
John