Goodman 80% AFUE R32

80% AFUE Upflow/Horizontal Gas Furances GR9T80 Series, Two-Stage, Standard, R-32

Furnace options: 40K btu, 60K Btu, 80K Btu Furnace Widths A, B, C, D

How to calculate BTU

Home total finish square footage X 30 = Minimum BTU

ex: 1560 sqft x 30 = 46,800 Btu / 0.8 (80% efficient) = 58,500 btu = Size needed = 60K