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Bottom Air Outlet, Natural Gas / LP

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 1-24 of 24 results
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  • Williams 3508231

    35,000 BTU, 75% AFUE, High Altitude (2,001 - 4,000'), Forsaire Top-Vent Wall Furnace, Bottom Air Outlet, LP, 115 VAC

    $ 999.99 Free Shipping
    (0 Reviews)
  • Williams 3508232

    35,000 BTU, 75% AFUE, High Altitude (2,001 - 4,000'), Forsaire Top-Vent Wall Furnace, Bottom Air Outlet, Natural Gas, 115 VAC

    $ 965.99 Free Shipping
    (1 Review)
  • Williams 3508631

    35,000 BTU, 75% AFUE, Top-Vent Wall Furnace, Bottom Air Outlet, LP, 115 VAC

    $ 837.99 Free Shipping
    (0 Reviews)
  • Williams 3508632

    35,000 BTU, 75% AFUE, Top-Vent Wall Furnace, Bottom Air Outlet, Natural Gas, 115 VAC

    $ 843.99 Free Shipping
    (1 Review)
  • Williams 3518232

    35,000 BTU, 75% AFUE, High Altitude (2,001 - 4,000'), Forsaire Top-Vent Wall Furnace, Bottom Air Outlet, Natural Gas, 115 VAC

    $1,052.99 Free Shipping
    (1 Review)
  • Williams 3538232

    35,000 BTU, 75% AFUE, High Altitude (4,001 - 6,000'), Forsaire Top-Vent Wall Furnace, Bottom Air Outlet, Natural Gas, 115 VAC

    $1,052.99 Free Shipping
    (1 Review)
  • Williams 3538632

    35,000 BTU, 75% AFUE, High Altitude (4,001 - 6,000'), Top-Vent Wall Furnace, Bottom Air Outlet, Natural Gas, 115 VAC

    $1,040.99 Free Shipping
    (0 Reviews)
  • Williams 3558232

    35,000 BTU, 75% AFUE, High Altitude (6,001 - 8,000'), Forsaire Top-Vent Wall Furnace, Bottom Air Outlet, Natural Gas, 115 VAC

    $1,052.99 Free Shipping
    (1 Review)
  • Williams 4007331

    40,000 BTU, 80% AFUE, Direct-Vent Wall Furnace, Bottom Air Outlet, LP, 115 VAC

    $1,386.99 Free Shipping
    (0 Reviews)
  • Williams 4007332

    40,000 BTU, 80% AFUE, Direct-Vent Wall Furnace, Bottom Air Outlet, Natural Gas, 115 VAC

    $1,310.99 Free Shipping
    (2 Reviews)
  • Williams 4007731

    40,000 BTU, 75% AFUE, Direct-Vent Wall Furnace, Bottom Air Outlet, LP, 115 VAC

    $1,177.99 Free Shipping
    (3 Reviews)
  • Williams 4007732

    40,000 BTU, 75% AFUE, Direct-Vent Wall Furnace, Bottom Air Outlet, Natural Gas, 115 VAC

    $ 982.99 Free Shipping
    (2 Reviews)
  • Williams 5008631

    50,000 BTU, 74% AFUE, Top-Vent Wall Furnace, Bottom Air Outlet, LP, 115 VAC

    $ 944.99 Free Shipping
    (0 Reviews)
  • Williams 5008632

    50,000 BTU, 74% AFUE, Top-Vent Wall Furnace, Bottom Air Outlet, Natural Gas, 115 VAC

    $ 965.99 Free Shipping
    (1 Review)
  • Williams 5507331

    55,000 BTU, 76% AFUE, Direct-Vent Wall Furnace, Bottom Air Outlet, LP, 115 VAC

    $1,492.99 Free Shipping
    (0 Reviews)
  • Williams 5507332

    55,000 BTU, 76% AFUE, Direct-Vent Wall Furnace, Bottom Air Outlet, Natural Gas, 115 VAC

    $1,340.99 Free Shipping
    (2 Reviews)
  • Williams 5508231

    55,000 BTU, 76% AFUE, Top-Vent Wall Furnace, Bottom Air Outlet, LP, 115 VAC

    $1,145.99 Free Shipping
    (0 Reviews)
  • Williams 5508232

    55,000 BTU, 76% AFUE, Top-Vent Wall Furnace, Bottom Air Outlet, Natural Gas, 115 VAC

    $ 963.99 Free Shipping
    (1 Review)
  • Williams 6007731

    62,000 BTU, 76% AFUE, Direct-Vent Wall Furnace, Bottom Air Outlet, LP, 115 VAC

    $1,148.99 Free Shipping
    (3 Reviews)
  • Williams 6007732

    60,000 BTU, 76% AFUE, Direct-Vent Wall Furnace, Bottom Air Outlet, Natural Gas, 115 VAC

    $ 996.99 Free Shipping
    (2 Reviews)
  • Williams 6057732

    62,000 BTU, 76% AFUE, High Altitude ( 6,001 - 8,000'), Direct-Vent Wall Furnace, Bottom Air Outlet, Natural Gas, 115 VAC

    $1,158.99 Free Shipping
    (0 Reviews)
  • Williams 6257732

    62,000 BTU Direct-Vent Furnace, 76% Efficiency, Natural Gas / LP Convertible, Bottom Air Outlet, 115 VAC, Standing Pilot

    $1,147.99 Free Shipping
    (3 Reviews)
  • Williams 6508631

    65,000 BTU, 74% AFUE, Top-Vent Wall Furnace, Bottom Air Outlet, LP, 115 VAC

    $ 969.99 Free Shipping
    (0 Reviews)
  • Williams 6508632

    65,000 BTU, 74% AFUE, Top-Vent Wall Furnace, Bottom Air Outlet, Natural Gas, 115 VAC

    $ 987.99 Free Shipping
    (1 Review)

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.