Condensate Drain Line Build-up And Smell - HVAC - DIY Chatroom Home Improvement Forum

Go Back   DIY Chatroom Home Improvement Forum > Home Improvement > HVAC


Thread Tools Display Modes
Old 12-27-2012, 11:02 AM   #1
Join Date: Sep 2011
Location: Texas
Posts: 18
Rewards Points: 16

Condensate Drain line build-up and smell

Since the AC is not running as much, I noticed a bad smell from one of two bathroom sinks in our new to us one story. This is the sink where the AC condensate drain empties. I put a bleach mixture in the sink and AC drain line. This seemed to help some, but the smell never really went away. I took off the T that the AC line connects to between the tailpiece and P-trap and found that the T was actually too far up on the sink tailpiece. This arrangement was apparently allowing condensate to drain enough (due to differences in diameters) but not too little to trip the upstairs drain line sensor or cause an overflow. This apparently has allowed moisture to remain in the drain line. This in turn caused a build-up of slime and sediment in the line. I cleaned out the trap, the flexible black hose that connects to the drains PVC stub and adjusted the T fitting. There is still a smell though not as strong.
What do you think about temporarily plugging the flexible line and using a specialty condensate line cleaner? My thought is to let it set a while then flush with warm water. If so, what would you recommend? Would something like Zep drain care (its an enzymatic build-up remover) work as well? I would follow this up with some tabs in the drain pan too.
I am open to any other ideas.
Thanks in advance


Easypick is offline   Reply With Quote

Thread Tools
Display Modes

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

Similar Threads
Thread Thread Starter Forum Replies Last Post
Sewage type smell coming from bathroom shower drain majorchamp Plumbing 29 06-25-2012 10:08 AM
Shower drain smell the bride Kitchen & Bath Remodeling 1 01-21-2012 01:24 AM
AC drain pipe vent trap going dry - sewage smell denemante Plumbing 6 04-26-2011 06:52 PM
Sewage smell from shower drain, trap has water, vent was snaked and was clear clearasmud Plumbing 1 04-24-2011 06:28 AM
No sewer gas smell from open drain JakAHearts Plumbing 9 06-02-2010 01:16 PM

Top of Page | View New Posts


Search Engine Friendly URLs by vBSEO 3.6.1