We need a new condensing unit and coil. Currently have a 5 ton system. Have bids for 13 SEER Carrier , Payne & Trane systems, as well as for a 15 SEER Carrier (24ACC6).
One company said that I would be wasting $ going with the 15 SEER unit because in 5 ton units, the efficiency gain from 13 to 14 and 15 SEER is mostly from improvements in the fan in the furnace, and since we aren't replacing the furnace, we would be paying more for no benefit. He said we'd need to go to a 16 SEER unit to see any real benefit, but he didn't recommend spending the extra $ for the 16 SEER since we may move within 5 years or so.
Any opinions on this? Thanks in advance.