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A3 refrigerants are literally propane. Here's why your A2L training won't cover it.

Ten years of field experience is the baseline, but only if those years included more than running calls.

A single tech departure costs $10K to $40K. Apprenticeship programs run $2K a year. The math isn't close.

Pull the cores, ditch the manifold, run big hoses, and let a 15 minute decay test prove the vacuum is real.

Low suction, high superheat, full charge. Before condemning the TXV, look at what the cold did to your head pressure.

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