Replace Coil or whole unit?
My AC unit wasn't cooling and when the tech came to do the maintenance he found it low on refrigerant. He started adding R22 and did not stop until 10 lbs later. Under my maintenance plan I paid $67/lb for 9 lbs.
So I have a leak in the coil of my upstairs unit and need some advice as to what to do. They have quoted me $1400 for a new coil for the existing unit.
If they replace the unit, it will cost me $5050.80 for a new Trane XB13, but they will refund the $637 for R22 they added before finding the leak. Net $4416.80 vs. net $2037.
The salesman was pushing the need to move to a R410 unit and the associated resale. This seemed odd to me. I have another unit downstairs that would still be R22.
I don't plan to be in this house more than another year or two. What would you do?