A unit of measure for electric pressure. The typical voltages applied to U.S. air conditioning are 208 volts, 230 volts, and 265 volts.

Unit of measure of electrical energy. One ampere of current flow at a pressure of one volt equals one watt of electrical energy. Utility costs are based on kilowatt hours (KWH) used, not voltage or cu [..]

The temperature as read on a standard thermometer.

Wet-bulb temperature is the temperature indicated by a wet-bulb thermometer constructed and used according to specification. Wet-bulb temperature will always be less than dry-bulb temperature, except [..]

The temperature at which the condensation of water vapor in space begins for a given state of humidity and pressure as the temperature of the vapor is reduced. Simply stated, it is the temperature at [..]

In air conditioning, a system in which the condensing unit may be located outside the conditioned space with the air handling unit, containing an evaporator coil and a blower assembly, located within [..]

A measure of the additional energy (KWH) required for an electric resistance heat system as compared to a heat pump system to heat a given space. The higher the SPF the more economical operation of th [..]

That heat which changes only the dry bulb temperature of the transfer medium in heating and air conditioning. For instance, sensible heat will increase or decrease, as the case may be, the temperature [..]

The amount of water vapor in the air at a given temperature, compared with (relative to) the total amount of vapor the same air could hold at the same temperature if it were 100 percent saturated with [..]

A chemical compound, such as R-410A, R-22, R-134A, and others, which produces a refrigerating effect by its absorption of heat while expanding or vaporizing. It is reusable, not requiring replacement [..]