Take a wet and dry "shop vac" and use it to apply vaccum to the drippy end.

Or, open up the system and pour hot water and bleach (about 1 part Clorox to
9 parts hot water) into the drain tube, at the A coil end.

Christopher A. Young
Learn more about Jesus
www.lds.org
..

"Robert Macy" wrote in message
...
AZ is a bit hot lately, so running AC's more than usual.

Just noticed no dripping out the drain pipes, but then again has been
a bit dry at 10-12% humidity so maybe no big deal. But remember Jim
Thompson, and others posting about spider nest build up in pipe or
slime mold clogging pipes and not noticing until catastrophic, like
water is dripping through ceiling.

Don't want to get that far.

So how to make certain the AC drain system is clear?