I have a 1984 Trane 'Super Efficiency Elite' AC. The model number is BTX736A100A0.
I'd like to know what the SEER rating is for this unit. Can anyone help?
It's a 29-year old unit that still runs great, but we understand that one day we'll need to replace it. I'd like to do the calculations to determine what we can expect in terms of energy cost savings, but need to know the SEER of this unit to use as a baseline.
Any help is appreciated. Thanks!