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is evacuating the same thing as pulling a vacuum?
I was told if i put liquid in to go in the high side and if I am using vapor to go in the low side. Sound right? I'm using them 12oz cans of 134A
ok can i put pure liquid in the low side or use the vapor? What pressures do I want for low and high side? 35-40 low? 250ish high?
no cold air blowing out when ac is on but low pressure