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Lennox XP13-024 Expansion Valve
Your air conditioner cannot possibly cool the house if the valve was missing. A normal AC expansion valve lets the coolant to expand back to its low-pressure vapor state from its highly pressured liquid form.
Main clues the expansion valve will need replacing
- The air is well below the temp it really should be exiting the air handler
- Your cooling system takes forever to actually keep things cool
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