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International Comfort Products NAC218AKA1 Expansion Valve
Pretty much every air conditioning system has an expansion valve that makes it easier for the refrigerant to expand into its normal low-pressure vaporous form from its highly pressured liquid form. The AC in a split system cannot possibly cool the house if the valve was not working.
Chief elements of a barely functioning refrigerant expansion valve
- The cooled air is warmer than it ought to be exiting the air handler
- The outdoor AC unit takes forever in its bid to bring down the temperature
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