A/C making water gurgling/blowing sound

Reply

  #1  
Old 12-23-15, 09:03 PM
Member
Thread Starter
Join Date: Aug 2013
Location: USA
Posts: 34
Received 0 Votes on 0 Posts
Question A/C making water gurgling/blowing sound

Hello!

I was wondering if someone can help me with some weird sounds my AC is making. The unit has been making this sound for a few weeks now and I have tried to troubleshoot it on my own but running out of ideas. The sound the AC is making is kinda like a gurgling sound of water or best way I can describe it when a kid uses a straw to blow and make bubbles in a drink. I want to note it takes a minute or two after the AC kicks on for the sound to start. Also I want to note the sound stops right away when the AC turns off.


From the information I have found on the net it looks like it could be 1 of 2 things. First, the unit could be plummed or piped in wrong which is causing a backup making the sound. I am ruling this out for right now as I have lived here for several years and now is when I am noticing the sound.

Second, is that the drain pipe has gotten clogged and is causing a backup (forgive me if I am using less than technical terms here), my only issue is I have No clue on how to clear the clog if there is one myself. I am attaching photos of my AC unit and then also there is a very small access vent directly underneath it. No water leakage underneath it and everything is bare dry.

Anyone have any ideas?
I am leaning more towards this direction.
 
Attached Images    
Sponsored Links
  #2  
Old 12-23-15, 09:07 PM
PJmax's Avatar
Group Moderator
Join Date: Oct 2012
Location: Northern NJ - USA
Posts: 52,676
Received 343 Votes on 321 Posts
The noise is definitely drain related. Check the air filter. If it gets plugged the system will operate in a vacuum and not allow the drain to drain correctly until the blower shuts off.

Your first picture shows pipes. Not terribly helpful. A picture from further back so we can see how they are connected to the unit would be more beneficial.
 
  #3  
Old 12-24-15, 11:14 AM
Houston204's Avatar
Forum Topic Moderator
Join Date: Oct 2009
Location: Texas
Posts: 7,372
Received 10 Votes on 8 Posts
It looks like your drain needs to be trapped.


I would show up with two 3/4 " couplings, a 3/4" P-trap, a 3/4" pvc union, a short piece of schedule 40 PVC, some PVC glue and a pvc tubing cutter.

I would install a trap on that drain under the air handler.
Looks like it would take 5 minutes and $20.

 
  #4  
Old 12-28-15, 07:19 PM
Member
Thread Starter
Join Date: Aug 2013
Location: USA
Posts: 34
Received 0 Votes on 0 Posts
Thanks for the replies! Sorry for taking so long to get back to you, the holidays took a bit out of me.

I think it turned out to be a filter/vacuum issue. I went and got a new filter and when I turned off the A/C to go switch it out the motor had just been running and the filter was being "sucked" towards it and almost touching the intake value. Not to mention the frame almost fell apart on me when I pulled it out. Cheap grocery store filter. grrrr... Anyways, the sound went away with a new filter.

Should I still be worried and try to change the drain or should i be in the clear now that changing the filter? BTW the filter was only in for about 40 days so I am thinking I just got a piece of you know what filter.
 
  #5  
Old 12-28-15, 09:04 PM
Houston204's Avatar
Forum Topic Moderator
Join Date: Oct 2009
Location: Texas
Posts: 7,372
Received 10 Votes on 8 Posts
http://www.firstco.com/documents/documents/raq405.pdf

If the evaporator coil is before the blower in the air stream the drain should be trapped. (but not double trapped)

Do you get sewer gas smells in the house? Adding a trap should prevent this from occurring at the air handler.

http://www.firstco.com/getattachment...-Inst-3-11.pdf

Name:  P trap first company.jpg
Views: 3630
Size:  50.7 KB

http://www.firstco.com/Products/Obsolete-Products
 
  #6  
Old 10-08-16, 11:18 PM
Member
Thread Starter
Join Date: Aug 2013
Location: USA
Posts: 34
Received 0 Votes on 0 Posts
Time to bring back an old thread.... So my A/c was making the same sound again. I had a friend from work take a look and he said that there is nothing to be concerned about ( he used to be an HVAC specialist) anyways I was changing the filter today and I noticed the "grill" or the metal section that pulls air into the unit right behind the filter was wet. Not soaking wet but damp as if I ran my fingers across it I could get a drop of water from it. Is this normal or does that mean the watery sound I am hearing is actually something leaking? Btw I hope grill is the correct term. Literally I'm taking about the part of the unit that has the guides for you to slide the filter into.
 
  #7  
Old 10-09-16, 05:51 AM
Houston204's Avatar
Forum Topic Moderator
Join Date: Oct 2009
Location: Texas
Posts: 7,372
Received 10 Votes on 8 Posts
Your friend disagrees with the manual?
Did he see a trap or does he not understand the function of a trap?
A trap is required for proper drainage.

Again, a trap is required for proper drainage.

I recommend adding a trap.
 
Reply

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
Display Modes
 
Ask a Question
Question Title:
Description:
Your question will be posted in: