I am not getting into the argument but I charged my first AC system in probably 1979. Been to MANY different classes with GM, Ford, Chrysler and Toyota. In AUTOMOTIVE AC systems, I was trained...and everybody I know to charge from the low side. That's how I've always done it. That's how everybody around here does it. Never had an issue.
Auto Air of Macon has been in business better than fifty years. That's how they do it. That's how they train people in their classes to do it.
Again, I am not arguing. Just stating that's how everybody around here has always done it. I have even had home HVAC guys tell me it's backwards from their work, that they DO charge through the high side. I have also seen compressor failures BECAUSE of being charged through the high side. EVERY SINGLE AC kit you see in the auto parts store that comes with a charging hose comes with a hose that fits the low side only. The instructions on every single kit we sell say to charge through the low side. I even have a set of nice Robinair gauges that read on the low side gauge "CHARGE THROUGH LOW SIDE".
Is it perhaps a difference between automotive and other types of HVAC and refrigeration?
