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Carrier 58MSA040 Expansion Valve
Your HVAC system expansion valve allows the coolant to expand into its regular vapor form from a liquid. Your main AC unit can not supply your house with cold air with no functioning valve.
Warnings your refrigerant expansion valve is on its last leg
- The cooled air is definitely not as cold as it used to be blowing from the vents
- AC unit takes way too long in a bid to bring down the temp in the house
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