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Friedrich MR12C1H Expansion Valve
Your main AC unit would most likely give you heated air if the expansion valve was totally worn out. Your home AC system contains an expansion valve that makes it easier for the refrigerant to expand back to its low-pressure vapor state from a liquid.
How do you know when your refrigerant expansion valve needs replacing?
- Air flow is not as cool as than the usual air coming from the air handler
- AC unit takes way too long to actually keep the house cool
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