Deteriorating A/C Hoses

[joraz]

95 Foretravel

The outfit that's working on my dash A/C has advised me that they must replace both of my A/C hoses which run the length of the coach (compressor in back, condensor in front). They say that they flushed out the system but continue to get black rubber like residue. They conclude that the old hoses are deteriorating and must be replaced. In addition, they say they need to replace the condensor and evaporator. The system was working OK until a few weeks ago. Anyhow, we're talking about some big bucks here. Does the deteriorating hose theory sound reasonable? I've never heard of A/C hoses going like this (fuel, yes but not A/C). BTW, they've already replaced the compressor (leaking) and the expansion valve and flushed the system. Thanks.
jor

[mpierce]

Yes. I know a number of the big rig MH's from 80's and 90's have the same problem. Most have gone to just running the diesel benny, and running the RV AC's. Too much hassle and $ to replace the hoses and EVERYTHING back to the engine.