My 2 different Carrier quotes states I would have a 2 stage HP and Furnace Backup. They said they wouldnt have to modify my ductwork.
Same with the Trane quote.
My Goodman quote is for an A/C and 2 stage furnace. They claim they would have to modify my whole duct system to be able to use the 2 stage furnace.
Whos right and whos wrong? Or do the systems work differently allowing no duct work to be done on the higher system? Or does the Goodman installer not know what hes talking about?