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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.
This calculator is for estimating capacity only, and does not give exact equipment capacities for your home.
Save big with these items in our Scratch-N-Dent inventory! All items are guaranteed to work perfectly, and come with the same full warranty as new items. All large equipment Scratch-N-Dent items ship free (furnaces, air conditioners, heat pumps, air handlers). Products ordered with large equipment Scratch-N-Dent items also ship free. If a Scratch-N-Dent evaporator coil is purchased alone, ground shipping charges will apply (see exact cost at checkout). Most Scratch-N-Dent orders will ship within one business day. All Scratch-N-Dent sales are final. Please see individual product descriptions for complete product information. Please see our Scratch-N-Dent Policy for more information on shipping, warranties and replacement parts.
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.