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Carrier FB4CNF060 Expansion Valve
Air conditioning systems could not cool the air without a properly functioning valve. Almost all AC systems have an expansion valve that allows the coolant to expand into its normal low-pressure vaporous form from a high pressure liquid state.
Major signs your main expansion valve will die soon
- Cold air is not cold enough as it ought to be exiting the vents
- The outdoor AC unit takes too long to keep the house cool
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