Sound coming from condensate under sink


Old 07-15-03, 02:39 PM
Visiting Guest
Posts: n/a
Cool Sound coming from condensate under sink

We are experiencing a gurgling sound coming from under the sink where the condensate drain ties into the sink drain, when the AC unit is on. The condensate line joins the sink drain about 1 inch above the start of the sink trap. After looking in the attic, the condensate drain that goes down the wall and to the sink, has a T pipe fitting installed and you can hear water flowing thru the T joint when the AC is running.

I assume the noise is coming from the air trapped inside the condensate pipe when its forced into the water inside the sink trap. What can I do to remedy this sound?


PS. The AC is about 1 year old and working nicely, its just the sound coming from the sink that's driving us crazy.
Sponsored Links
Old 07-15-03, 03:01 PM
hvac4u's Avatar
Join Date: Aug 2001
Location: NW atlanta
Posts: 3,147
Received 0 Votes on 0 Posts
i would

pour bleach into the tee then cap it. you may hearing air being pulled back through the drain. a cap will eliminate the noise.
Old 07-15-03, 09:31 PM
GregH's Avatar
Super Moderator
Join Date: Jan 2001
Location: Manitoba
Posts: 10,104
Received 24 Votes on 23 Posts
hvac4u is right. Air is being drawn through drain.
You need a trap on the drain line at the air handler to prevent the noise.
Not only is noise a problem, the lack of a trap could cause the drain pan to overflow if the air filter became plugged.
Old 07-17-03, 08:46 AM
Visiting Guest
Posts: n/a
Thanks for you input, I will put a cap on the T and see if that eliminates the noise. If not, I'll let you all know.
Old 08-01-03, 02:27 PM
Visiting Guest
Posts: n/a
Well, after a slight delay, I was able apply the described fix. Behold, the sound has since stopped. Thanks guys!
Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Thread Tools
Search this Thread
Ask a Question
Question Title:
Your question will be posted in: