andrew strasfogel wrote: > > There are several brands of AC compressors, generally in the $200 - > $300 range. Are there any brands that should be AVOIDED due to a high > failure rate? We will probably convert to R134 at the same time. Any > words of wisdom on this course of action be greatly appreciated.
New compressors are better than any brand of rebuilds. R134a may be a problem. PAG oil cannot be used in a system which previously contained chlorinated refrigerant (AKA R12), and is incredibly hydroscopic. POE oil is not a very good lube, especially for a compressor designed for mineral oil, and is merely highly hydroscopic, not quite as bad as PAG in the water absorption department, but still pretty bad compared to mineral oil. Most substitutes for R12, including R134a, must be used with barrier hoses or the system will slowly leak, right through the sides of the hoses. I'm not seeing anything better than restoring the system to functioning condition and filling up with hydrocarbons and mineral oil (envirosafe, duracool, etc).
