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HOME > HVAC > LENNOX > CB30M-21 > EXPANSION VALVE

Lennox CB30M-21 Expansion Valve

An expansion valve permits the refrigerant to expand back to its low-pressure vapor form from its highly pressured liquid form. The AC in your house would not produce cooled air if the expansion valve was either damaged or just not working properly.

Hints that your Lennox expansion valve needs replacing

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Before you decide on buying or purchasing any Lennox CB30M-21 part do your best and cross-check the correct model as well as make a visual comparison so that you are positive that the right expansion valve is the one being purchased. There is no need to install the part by yourself. Hire a pro in your town or city to hire and install the part for you.
Feel free to download your manual for help.
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Check eBay for your expansion valve!