[F16 1UB]

Had a Mitsubishi wall unit installed 3+ years ago in my lanai. This morning I noticed water was on the floor & realized it was coming from the AC. I called M & S in Fruitland Park.... the unit was purchased & installed by them....I scheduled an appointment then asked if I take a shop vac & attach it to the drain line outside might that cure the problem? I figured it was just a clogged drain line. They put me on hold & connected me with a tech.... tech said that's most likely the problem.... Got shop vac out & did just what he suggested. No more water coming INSIDE. Now going thru drain outside.... works as advertised....Thank you M & S..... LIFE IS GOOD!!

[LI SNOWBIRD]

If you don't have regular maintenance on your AC then algae will grow in the drain pipe and clog it. Using the vac works but I've heard from the AC tech to pour a pint of vinegar ( another tech said bleach) in the white PVC stand off port once a month. We opted to have regular maintenance.

[autumnspring]

I must say I am confused re: bleach in ac drain.

I've had techs say that bleach will soften the glue on the PVC pipe and I've heard it will cause the pipe to crack. DOES ANYONE KNOW?

The "glue" is actually acetone which dissolves the plastic and so the plastic melts together. The solvent quickly evaporates. I do not think bleach can get itnto let alone damage the joints.

[DangeloInspections]

Forgive me for intruding, but you should never use bleach to help keep your condensate drain from clogging. Bleach and bleach vapors can damage the internal components of your air handler, including the A-coil.

Pouring hot water down it, vacuuming or blowing it out, or even vinegar is fine, (although some techs even so no to vinegar) but do not use bleach. Hope this helps....

Frank

[Nucky]

Winner Winner....Mr Dangelo is 100% correct....vinegar...perfecto. Use the white vinegar first followed by the hottest water you can handle after the vinegar has set for 10-15 minutes. It's a small household maintenance item done every 2 to 3 months. If we ever get down to The Villages I will do it for you if you wish.

[rjm1cc]

I use a cup of vinegar each month in the home A/C system. My drain line is about 30 feet. Maybe 1/2 cup for your unit. Agree skip the bleach. If you are not doing your home A/C start doing it now or you will have the same problem.