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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 121-144 of 174 results
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  • Goodman GMH81205DN

    120,000 BTU Furnace, 80% Efficiency, 2-Stage Burner, 2,000 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    $ 746.99 Free Shipping
    (21 Reviews)
  • Goodman GMH81205DX

    Lonox Emission 120,000 BTU Furnace, 80% Efficiency, 2-Stage Burner, 2,000 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    $ 789.99 Free Shipping
    (21 Reviews)
  • Goodman GMH950453BX

    46,000 BTU Furnace, 95% Efficiency, 2-Stage Burner, 1,200 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    popular
    $ 747.99 Free Shipping
    (60 Reviews)
  • Goodman GMH950703BX

    69,000 BTU Furnace, 95% Efficiency, 2-Stage Burner, 1,200 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    popular
    $ 781.99 Free Shipping
    (60 Reviews)
  • Goodman GMH950704CX

    69,000 BTU Furnace, 95% Efficiency, 2-Stage Burner, 1,600 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    $ 813.99 Free Shipping
    (60 Reviews)
  • Goodman GMH950904CX

    92,000 BTU Furnace, 95% Efficiency, 2-Stage Burner, 1,600 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    $ 859.99 Free Shipping
    (60 Reviews)
  • Goodman GMH950905CX

    92,000 BTU Furnace, 95% Efficiency, 2-Stage Burner, 2,000 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    $ 938.99 Free Shipping
    (60 Reviews)
  • Goodman GMH951155DX

    115,000 BTU Furnace, 95% Efficiency, 2-Stage Burner, 2,000 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    $ 968.99 Free Shipping
    (60 Reviews)
  • Goodman GMS80403AN

    40,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 1,200 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    popular
    $ 462.99 Free Shipping
    (20 Reviews)
  • Goodman GMS80403AX

    Lonox Emission 40,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 1,200 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    popular
    $ 502.99 Free Shipping
    (20 Reviews)
  • Goodman GMS80603AN

    60,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 1,200 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    popular
    $ 494.99 Free Shipping
    (20 Reviews)
  • Goodman GMS80603AX

    Lonox Emission 60,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 1,200 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    $ 526.99 Free Shipping
    (20 Reviews)
  • Goodman GMS80604BN

    60,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 1,600 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    $ 524.99 Free Shipping
    (20 Reviews)
  • Goodman GMS80604BX

    Lonox Emission 60,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 1,600 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    $ 535.99 Free Shipping
    (20 Reviews)
  • Goodman GMS80804BX

    Lonox Emission 80,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 1,600 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    $ 571.99 Free Shipping
    (20 Reviews)
  • Goodman GMS80805CN

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

    $ 623.99 Free Shipping
    (20 Reviews)
  • Goodman GMS80805CX

    Lonox Emission 80,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 2,000 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    $ 591.99 Free Shipping
    (20 Reviews)
  • Goodman GMS81005CX

    Lonox Emission 100,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 2,000 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    $ 625.99 Free Shipping
    (20 Reviews)
  • Goodman GMS81205DX

    Lonox Emission 120,000 BTU Furnace, 80% Efficiency, Single-Stage Burner, 2,000 CFM Multi-Speed Blower, Upflow/Horizontal Flow Application

    $ 691.99 Free Shipping
    (20 Reviews)
  • Goodman GMSS920402BN

    40,000 BTU Furnace, 92% Efficiency, 1-Stage Burner, 800 CFM Single-Speed Blower, Upflow/Horizontal Flow Application

    $ 779.99 Free Shipping
    (0 Reviews)
  • Goodman GMSS920603BN

    60,000 BTU Furnace, 92% Efficiency, 1-Stage Burner, 1200 CFM Single-Speed Blower, Upflow/Horizontal Flow Application

    $ 789.99 Free Shipping
    (0 Reviews)
  • Goodman GMSS920803BN

    80,000 BTU Furnace, 92% Efficiency, 1-Stage Burner, 1200 CFM Single-Speed Blower, Upflow/Horizontal Flow Application

    popular
    $ 809.99 Free Shipping
    (0 Reviews)
  • Goodman GMSS920804CN

    80,000 BTU Furnace, 92% Efficiency, 1-Stage Burner, 1600 CFM Single-Speed Blower, Upflow/Horizontal Flow Application

    popular
    $ 839.99 Free Shipping
    (0 Reviews)
  • Goodman GMSS920805CN

    80,000 BTU Furnace, 92% Efficiency, 1-Stage Burner, 2000 CFM Single-Speed Blower, Upflow/Horizontal Flow Application

    $ 860.99 Free Shipping
    (0 Reviews)

In 2002 Alpine Home Air Products became the first company to sell heating, air conditioning and indoor air-quality products online. We have proudly served hundreds of thousands of customers, helping them save time and money by buying their products direct.