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Lennox CB30U-21 Expansion Valve
Expansion valves are used in AC systems and lets the coolant to expand back to its low-pressure gas state from a high-pressure liquid form. A split-system AC unit would probably be the worst AC in the world if the valve was not present
Warnings the AC expansion valve needs replacing
- The air conditioned flow is warmer than it really should be coming from the AC
- Your cooling system takes way too long to actually keep the temperature down
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If you decide on picking up or purchasing any Lennox CB30U-21 replacement part, do your due diligence and cross-check the correct model and also make a visual comparison in order to be sure the right expansion valve is being ordered. There is no rule that says you have to install the replacement part alone. Consult with a professional in your community to pay to install it for you.
Feel free to download your manual for help.
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