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Natural Gas / Propane (LP) Fuel, Furnaces

BTU CALCULATOR
BTU CALCULATOR

BTU stands for "British Thermal Unit" and measures the heating or cooling capacity of a furnace or air conditioning unit. Enter your homes square footage to see how many BTU's are required to adequately heat or cool it.

Enter the square footage of your home (or room) and press Go.

Square Footage

GO
This calculator is for estimating capacity only, and does not give exact equipment capacities for your home.
Displaying 73-96 of 143 results
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  • Goodman GDH80603AX

    Low NOx Emission 60,000 BTU Furnace, 80% Efficiency, 2-Stage Burner, 1,200 CFM Multi-Speed Blower, Dedicated Downflow Application

    $ 579.99 Free Shipping

    Or as low as /mo

    (11 Reviews)
  • Goodman GDH80804BN

    80,000 BTU Furnace, 80% Efficiency, 2-Stage Burner, 1,600 CFM Multi-Speed Blower, Dedicated Downflow Application

    $ 623.99 Free Shipping

    Or as low as /mo

    (11 Reviews)
  • Goodman GDH80804BX

    Low NOx Emission 80,000 BTU Furnace, 80% Efficiency, 2-Stage Burner, 1,600 CFM Multi-Speed Blower, Dedicated Downflow Application

    $ 705.99 Free Shipping

    Or as low as /mo

    (11 Reviews)
  • Goodman GDH81005CN

    100,000 BTU Furnace, 80% Efficiency, 2-Stage Burner, 2,000 CFM Multi-Speed Blower, Dedicated Downflow Application

    $ 736.99 Free Shipping

    Or as low as /mo

    (11 Reviews)
  • Goodman GDH81005CX

    Low NOx Emission 100,000 BTU Furnace, 80% Efficiency, 2-Stage Burner, 2,000 CFM Multi-Speed Blower, Dedicated Downflow Application

    $ 766.99 Free Shipping

    Or as low as /mo

    (11 Reviews)
  • Goodman GDS80403AN

    40,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 1,200 CFM Multi-Speed Blower, Downflow Application

    $ 527.99 Free Shipping

    Or as low as /mo

    (21 Reviews)
  • Goodman GDS80403AX

    Low NOx Emission 40,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 1,200 CFM Multi-Speed Blower, Downflow Application

    $ 539.99 Free Shipping

    Or as low as /mo

    (21 Reviews)
  • Goodman GDS80603AN

    60,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 1,200 CFM Multi-Speed Blower, Downflow Application

    $ 526.99 Free Shipping

    Or as low as /mo

    (21 Reviews)
  • Goodman GDS80603AX

    Low NOx Emission 60,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 1,200 CFM Multi-Speed Blower, Downflow Application

    $ 534.99 Free Shipping

    Or as low as /mo

    (21 Reviews)
  • Goodman GDS80804BN

    80,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 1,600 CFM Multi-Speed Blower, Downflow Application

    $ 613.99 Free Shipping

    Or as low as /mo

    (21 Reviews)
  • Goodman GDS80804BX

    Low NOx Emission 80,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 1,600 CFM Multi-Speed Blower, Downflow Application

    $ 636.99 Free Shipping

    Or as low as /mo

    (21 Reviews)
  • Goodman GDS81005CN

    100,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 2,000 CFM Multi-Speed Blower, Downflow Application

    $ 619.99 Free Shipping

    Or as low as /mo

    (21 Reviews)
  • Goodman GDS81005CX

    Low NOx Emission 100,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 2,000 CFM Multi-Speed Blower, Downflow Application

    $ 727.99 Free Shipping

    Or as low as /mo

    (21 Reviews)
  • Goodman GME80603BN

    60,000 BTU Furnace, 80% Efficiency, 2 Stage Burner, 1,200 CFM X13 Motor, Upflow/Horizontal Flow Application

    $ 784.99 Free Shipping

    Or as low as /mo

    (0 Reviews)
  • Goodman GME80603BX

    Low NOx Emission 60,000 BTU Furnace, 80% Efficiency, 2 Stage Burner, 1,200 CFM X13 Motor, Upflow/Horizontal Flow Application

    $ 784.99 Free Shipping

    Or as low as /mo

    (0 Reviews)
  • Goodman GME80805CN

    80,000 BTU Furnace, 80% Efficiency, 2 Stage Burner, 2,000 CFM X13 Motor, Upflow/Horizontal Flow Application

    $ 860.99 Free Shipping

    Or as low as /mo

    (0 Reviews)
  • Goodman GME80805CX

    Low NOx Emission 80,000 BTU Furnace, 80% Efficiency, 2 Stage Burner, 2,000 CFM X13 Motor, Upflow/Horizontal Flow Application

    $ 832.99 Free Shipping

    Or as low as /mo

    (0 Reviews)
  • Goodman GME80805DX

    Low NOx Emission 80,000 BTU Furnace, 80% Efficiency, 2 Stage Burner, 2,000 CFM X13 Motor, Upflow/Horizontal Flow Application

    $ 861.99 Free Shipping

    Or as low as /mo

    (0 Reviews)
  • Goodman GME81005CN

    100,000 BTU Furnace, 80% Efficiency, 2 Stage Burner, 2,000 CFM X13 Motor, Upflow/Horizontal Flow Application

    $ 887.99 Free Shipping

    Or as low as /mo

    (0 Reviews)
  • Goodman GME81005CX

    Low NOx Emission 100,000 BTU Furnace, 80% Efficiency, 2 Stage Burner, 2,000 CFM X13 Motor, Upflow/Horizontal Flow Application

    $ 879.99 Free Shipping

    Or as low as /mo

    (0 Reviews)
  • Goodman GMEC960402BN

    40,000 BTU Furnace, 96% Efficiency, 2 Stage Burner, 800 CFM, Multi-Speed Upflow/Horizontal Flow Application

    $ 887.99 Free Shipping

    Or as low as /mo

    (10 Reviews)
  • Goodman GMEC960603BN

    60,000 BTU Furnace, 96% Efficiency, 2 Stage Burner, 1200 CFM, Multi-Speed Upflow/Horizontal Flow Application

    $ 898.99 Free Shipping

    Or as low as /mo

    (10 Reviews)
  • Goodman GMEC960803BN

    80,000 BTU Furnace, 96% Efficiency, 2 Stage Burner, 1200 CFM, Multi-Speed Upflow/Horizontal Flow Application

    $1,021.99 Free Shipping

    Or as low as /mo

    (10 Reviews)
  • Goodman GMEC961004CN

    100,000 BTU Furnace, 96% Efficiency, 2 Stage Burner, 1600 CFM, Multi-Speed Upflow/Horizontal Flow Application

    $1,101.99 Free Shipping

    Or as low as /mo

    (10 Reviews)