The importance of changing a filter and the damage it can cause.
As refrigerant passes through the indoor evaporator coil, it picks up heat by being absorbed into the refrigerant. When someone has a dirty or clogged filter, not only does the unit become inefficient, it also can cause major damage and is the #1 reason for compressor failure. If there is not sufficient airflow, then the refrigerant will return to the compressor in a liquid state instead of a vapor as no heat is being removed from the evaporator via lack of air flow. In an R-22 system the refrigerant is minus forty-one point four (-41.4) degrees below zero and R-410A minus fifty five point four (-55.4) in a liquid state (or lower) and can cause catastrophic damage to internal parts of the compressor when returned as liquid. Therefore, REMEMBER TO KEEP THAT FILTER CLEAN!!!!!!!!!!!!!!
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