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Why Measure Both Superheat and Subcooling when Checking the Charge of an AC Unit with a TXV?
In This HVACR Training Video, I show how to check the charge. I discuss why technicians should check Total Superheat along with Subcooling when checking the refrigerant charge level of an air conditioner. Subcooling is the charging method of a single-speed system with a TXV. We check Total Superheat to make sure that no problems exist.
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