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Most homes and buildings utilize forced air central heating, ventilating, and air conditioning (HVAC) systems to maintain a comfortable living or working environment. These systems typically include three primary components:
An air handler (furnace, heat pump or air conditioner) that heats or cools the air
A network of supply ducts that delivers the conditioned air into the occupied space
A return duct system that delivers "stale" air from the occupied space back to the air handler for reconditioning.
It is estimated that more than 70 percent of all indoor air quality problems involve the operation and/or maintenance of HVAC systems. Like any other part of a home or building, dirt, dust, and other particulates can accumulate inside these systems. These contaminants can pass right through standard throwaway furnace filters, which provide less than 10% overall efficiency, and are virtually useless against particles small enough to be breathed into the lungs.
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Regulated by The Texas Department of Licensing and Registration
