A/C repair in winter: good idea?
 

Is it a good idea to have A/C system checked and repaired in winter?

I can not do A/C performance test until next summer.
However, this winter is a good time for me to have it repaired without loaner car.

You could if you were here in the South, as it was 85 degrees today (I was stupid enough to drive my '76 230 that doesn't have A/C and burned up the whole 30 miles home from work). I don't believe you can get a good feel for overcharge and efficiency without a good running of the system on a good hot day. That being said, a reputable shop with MB A/C experience can probably do the work and get it pretty close. Just be ready to put a set of gauges on it the first hot day to insure your pressure isn't too high on the high side, and that it is low enough on the low.