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.
This product is used for starting air conditioner or heat pump compressors (both reciprocal and scroll type) that need an extra "jolt" of electricity to get started.
Equipment that needs a hard-start capacitor:
Old heat pumps or condensers that are mechanically stuck and not operating.
If you have a new or old compressor that is not starting, try installing this hard-start capacitor before you do anything else. The parts inside a compressor might be too physically tight to move, or on systems with a TXV where the refrigerant pressures are higher on start-up, and need an extra "kick" of energy to get started. This hard-start capacitor provides that extra jolt of energy. Capacitors are very easy to install (takes about 1 minute) and will remain permanently in the equipment.
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.