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Trane 2TWR1036A1000AA Expansion Valve
Almost all AC systems have an expansion valve that lets the coolant to spread back into gaseous form from a high pressure liquid state. A split-system AC unit can not run without a working expansion valve.
Clues to watch for to know your refrigerant expansion valve has very little life left
- The cooling system takes a long time trying to keep the temperature down
- AC air production is much warmer than it used to be coming from the air handler
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