Stands for Gallons Per Hour. An efficiency rating for oil furnaces.

One of two types of basic cooling media (the other is chilled water). Direct expansion systems utilize Freon for cooling and dehumidification. The three most common methods of heat rejection are air-c [..]

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Whether your having and AC repair or furnace technician come to your home, be sure to learn the terminology so that you can make a well informed decision.

Acrylonitrile Butadiene Styrene. A black plastic pipe used in plumbing for drains and vents.

  The amount of water vapor in a given amount of air space. Grains per cubic foot measure absolute humidity.

A piston type-metering device that feeds the proper amount of liquid refrigerant into the evaporator.

Stands for Annual Fuel Utilization Efficiency. This is a percentage measurement of a furnace’s heating efficiency. For example, an AFUE of 90 means that 90% of the fuel is being used to warm your home [..]

The amount of air required to completely replace the air in a room or building; not to be confused with re-circulated air.