I had my system recharged last year at a A/C - Heating speciality shop here in Chicago, ("Cool Heat"). Cost $120.00 and came with a 90 day warranty. Like Brad has said, they apply a vacuum to the system to remove all moisture, then install the refrigerant, oil and dye. Although the shop had plenty of time to find a leak using their ultraviolet light, they could never find the source of the leak. They told me to bring the car back prior to the expiration of the 90 day warranty and they would check again and top off the refrigerant if needed. Well, by the end of the 90 day period, I could tell that the system didn't have the same cooling power as it did when it was freshly serviced, so I took it back in. They topped off the refrigerant and again looked for leaks, still finding nothing. Here it is, one year later, the refrigerant has completely drained from the system and we're ready to do it all over again. I was thinking about taking off my hoses, replacing all of the O rings and also replacing both of the shrader valves to see if that will solve the leak.
Originally Posted by Frank Wulfers
I don't get this statement by tweek: "Saabnazi also said the water boils at such and such inches of mercury. This flushes out any moisture."
Flushes out the moisture? How is that possible? Does that mean that the receiver / dryer absorbs the moisture? If that is the case, is it really necessary to apply the vacuum to the system?
Last edited by photousa; Wed 23 May 2012 at 03:23.
2003 Saab 9-5 Aero B235R
Sport Wagon 2.3T HO Manual