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Carrier 45-4SI Expansion Valve
Almost all AC systems have an expansion valve that allows the refrigerant to expand into its regular gaseous form from a high-pressure liquid form. Your air conditioner would most likely give you heated air if the valve was not present
What are the clues to watch out for to know my expansion valve is about to go out?
- AC unit takes a long time to cool as it should
- Cold air is well below the temp you are accustomed to coming into the house
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If you decide on picking up or ordering a new Carrier 45-4SI replacement part do your best and double check the correct model as well as make a visual comparison so that you are positive that the correct expansion valve is the one being purchased. The installing of the expansion valve is a piece of cake assuming you have the know-how and have the proper tools to get it done.
Feel free to download your manual for help.
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