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Carrier 38MFQ012 Expansion Valve
Pretty much every air conditioning system has an expansion valve that permits the refrigerant to expand back into its natural vaporous form from a high-pressure liquid form. A split-system AC unit would not produce cooled air if the valve was not doing its job.
Major signs of an ineffective AC expansion valve
- The cool flow of air is well below the temp than the usual air comes through the ducts
- AC unit takes forever in attempting to keep the temperature down
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