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re: Update - Not a plumbing issue. The coils in my AC are leaking

Posted on 6/23/21 at 2:37 pm to
Posted by Booyow
Member since Mar 2010
4009 posts
Posted on 6/23/21 at 2:37 pm to
quote:

the HVAC guy thinks it may be a main plumbing issue because is happening to 2 different units simultaneously.


Drip pans aren’t tied into the the “main plumbing”. It’s usually just a pvc run that empties onto the ground outside of your house

Edit: A little research after other posters corrected me shows that AC condensate lines can, in fact, be run to sinks.
This post was edited on 6/23/21 at 3:01 pm
Posted by ABucks11
Baton Rouge
Member since Jan 2012
1154 posts
Posted on 6/23/21 at 2:38 pm to
quote:

Drip pans aren’t tied into the the “main plumbing”. It’s usually just a pvc run that empties onto the ground outside of your house


My coworker had his second story bathroom sink overflow and flood his bathroom. AC drain line is tied the sink drain and algae grows and clogs the drain.
Posted by jmon
Mandeville, LA
Member since Oct 2010
8432 posts
Posted on 6/23/21 at 2:38 pm to
Not true. Some condensing units drip into the plumbing line on sinks. Overflow pans drain outside, usually.
Posted by tigeraddict
Baton Rouge
Member since Mar 2007
11825 posts
Posted on 6/23/21 at 2:43 pm to
quote:

Drip pans aren’t tied into the the “main plumbing”. It’s usually just a pvc run that empties onto the ground outside of your house


the condensate line ties into the plumbing waste/vent system. The safe pan, by code, either needs to have a float switch that will kill the unit if the pan fills up, or the drain line on the pan needs to go to a place where it will be seen notifying of an issue.

you should never have water in the safe pan unless there is an issue.
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