Mo@#$%^&* ..need A/C and Furnace replaced

Maybe check into a heat pump....and check to see if your local utility district has any rebates on those....

It would be a great selling point when the time comes.

Depends on where he lives. A/C side works great but heat side efficiency go's way down at 32 Degrees. Here in Arizona a mid grade rooftop unit runs between $ 3500 and $ 5000 installed.They are a good value for the Money spent.