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Carrier 38BYC048 Expansion Valve
An air conditioner would not yield any cooled air if the expansion valve was totally worn out. An expansion valve allows the coolant to expand back to its low-pressure gas form from a high-pressure liquid form.
Red flags your refrigerant expansion valve is dying
- The air conditioned air is not cold enough as it used to be coming out of the vents
- Your cooling system takes forever to actually bring down the temperature
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