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Friedrich MW18Y3FM Expansion Valve
Almost all AC systems have an expansion valve that lets the coolant to expand into its normal low-pressure vapor state from a high pressure liquid state. Your home air conditioner can not run if the expansion valve was worn out.
Major signs the expansion valve will die soon
- AC unit takes too long to actually keep the temperature down
- Cooled air is much warmer than the usual air for the AC to cool the house
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If you are going to be buying or ordering a new Friedrich MW18Y3FM replacement part, do your due diligence and make sure of the correct model as well as make a visual comparison in order to be sure the correct replacement expansion valve is the one being purchased. There is no rule that says you have to install it yourself. Hire a pro locally to do it for you.
Feel free to download your manual for help.
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