My A/C will blow out humid air when at an idle for more than a minute. Is this normal? I just had the A/C evacted and recharged and it is nice and cold while driving, but when I stop at a light, it will get humid until I start moving again. It did this prior to the recharge also.
Clogging of the water drain tube "might" be accelerated by mold. One thing to prevent that is to turn off AC a bit before your destination, give the humidity a chance to clear, if practical. If you're using AC round-the-clock I guess that goes out the window though.