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AC Definitions & Terminology

    SEER: Seasonal Energy Efficiency Rating. This is a term commonly used to identify how efficient an air conditioner
     is at using electricity. In 2006, a law took effect requiring a 13 SEER minimum air conditioning unit be installed when
     purchasing a new unit.
    BTU: British Thermal Unit. This is the amount of heat required to raise a temperature of one pound of water one
    MERV: The Minimum Efficiency Reporting Value is the standard comparison of the efficiency of an air filter.
    The MERV Scale ranges from 1 (least efficient) to 16 (most efficient) and measures a filter's ability to remove particles
    from 3 to 10 microns in size.
    410A REFRIGERANT: A environmentally sound refrigerant design not to harm the earth's ozone layer. Federal law
    requires all manufacturers to phase out ozone depleting refrigerant such as R-22 by 2010.
    CFM: Stands for Cubic Feet per Minute. A measurement of airflow that indicates how many cubic feet of air pass
    by a stationary point in one minute. The higher the number, the more air is being forced through the system.
    EER: Energy Efficient Ratings measure the efficiency with which a product uses energy to function. It is calculated
    by dividing a product's BTU output by its wattage.
    ZONING: A way to increase your home comfort and energy efficiency by controlling when and where heating &
    cooling occurs in a home.
    DUCTWORK: Hollow pipes used to transfer air from the Air Handler to the air vents throughout your home.
    Ductwork is one of the most important components of a home heating & cooling system.


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