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Carrier 58STX09010016 Expansion Valve
Your AC could not cool the air if the valve was missing. An expansion valve makes it easier for the refrigerant to expand back to its low-pressure vaporous form from a high-pressure liquid form.
Some clues of a faulty AC expansion valve
- Your AC unit takes a really long time in its bid to bring down the temp in the house
- The cooled air is not as cold as it should be being blown into the house
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