All new-fashioned air conditioning systems, down to wee “window” units, are equipped with internal air filters. These are conventionally of a light weight gauze-genre element, and must be replaced as conditions warrant (some models may be washable). For example, a erection in a high-dust environment, or a domicile with furry pets, will need to have the filters changed more often than buildings without these dirt loads. Failure to replace these filters as needed will contribute to a lower heat-switch velocity, resulting in wasted energy, shortened equipment life, and higher energy bills; also low air flow can effect in “iced-up” or “iced-over” evaporator coils, and then there is no air flow at all. Additionally, very dirty or plugged filters can cause overheating during a heating cycle, and can possibly result in damage to the furnace component or even passion.
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