The 5 Readings Every Tech Must Know Well
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Vacuum Best Practices
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HVAC Contractors Hate Me For Showing You This
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How to Evacuate an AC system, Full Vacuum Procedure
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The Basic Refrigeration Circuit
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Refrigerant Overcharge Troubleshooting and Prevention
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Troubleshooting With Sat Temps, Superheat, & Subcooling! 5 Possible Problems!!
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Subcooling = Stacking Liquid Refrigerant (What Subcool really Signifies)
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