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.
These accessories allow a split-system heat pump to work with a gas or LP furnace. The accessories control the operation of both pieces of equipment to accomplish two things: 1) That the furnace and heat pump don't operate at the same time, and 2) That the heat pump stops operating when it gets too cold outside, and the furnace runs instead.
Alternatively, instead of purchasing these products you could instead purchase a Honeywell Vision Pro 8000 Thermostat with optional outdoor temperature sensor which will accomplish the same thing.
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.