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Carrier FF1DNA018000AAAA Expansion Valve
An expansion valve allows the refrigerant to expand back to its low-pressure vapor form from a liquid. A split-system AC unit would not yield any cooled air when lacking a functioning expansion valve.
General warnings of a dying AC expansion valve
- AC takes its sweet time to appropriately cool all the rooms in your house
- The air conditioned flow is much warmer than it used to be coming out of the vents
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