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.
Studies have shown that heating and cooling systems can lose up to 30% of their efficiency due to leaks in the ductwork. The solution is to seal the ductwork at the joints where ducts connect together. Use of duct sealant will save you money on energy costs when operating your forced-air heating and cooling equipment.
In some states, such as California, it is required by law to inspect and seal the ductwork when replacing heating and cooling equipment connected to ductwork.
See more details about sealing ductwork in this helpful article about duct leakage.
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.