Warning! Charge A/C System with Freon as Vapor, no 16 Years ago
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If a charging hose is long enough you might get away with using liquid refrigerant because the liquid will partially change to a gas in the hose. The odds are not in your favor. More often you will freeze and shatter the compressors valves when the refrigerant hits the valves as a liquid. This happens in mere seconds, which is why we recommend charging the A/C system with the engine off.
