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Re: Problems with Mastercool4000 R1234YF machine
Posted to HVAC Forum on 5/30/2025

I was in the same situation with my Robinair R134 machine. I had a issue with it losing Freon overnight. Long story short, I found this company in Buena Park CA. E-Tech Equipment. They picked up my machine and fixed it in a week and delivered it back to me. It... Login to read more.