United CoolAir Glossary
Represents the heat leakage from one side of a wall to the other.
Having a frequency above the range of human hearing.
Invisible radiation waves with frequencies shorter than wave lengths of visible light and longer than X rays.
A factory assembled heating/cooling system in one package and usually designed for condiÂ¬tioning one space or room.
Electric motor that will operate on either ac or dc.
A device that allows for easier compressor start-up by temporarily reducing high-side pressure at the cylinder head.
A furnace in which air is forced up through the furnace from the bottom.