Hello, we are having a new furnace and AC unit installed right now. I'm kinda questioning the size they are putting in. They are installing a Goodman GMV95 95% efficient 90K BTU and a AMANA DSX16 SEER AC 3 ton unit. Our home is over 3500 sq feet. The OLD furnace they are taking out was 130K BTU and I'm not sure on the AC unit, but it is gone already. Any angles or ideas?