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Trane PTED090 Expansion Valve
An AC system would be impossible to cool the home if the valve was not working. Almost all AC systems have an expansion valve that makes it easier for the refrigerant to spread back into gas form from a high-pressure liquid form.
Warnings of a worsening expansion valve
- Cold air is not as cool as than the usual air for the AC to cool the house
- The cooling system takes way too long in its bid to cool the indoors
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