AC Condensate Plumbed To Septic - HVAC - DIY Chatroom Home Improvement Forum


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

CLICK HERE AND JOIN OUR COMMUNITY TODAY...IT'S FREE!

Reply
 
Thread Tools Display Modes
Old 04-17-2012, 08:25 PM   #1
Member
 
Join Date: Dec 2011
Location: Southern Illinois
Posts: 128
Rewards Points: 85
Default

AC condensate plumbed to septic


Just bought a new old house and the air handler sits in the garage, on the slab. The air handler's condensate drain line goes through the foundation wall and into the home's crawlspace. From there it drops into an open pipe, which leads into a P-trap. From the trap it goes straight to the main waste pipe, then out to the septic system.

Is this kosher? The open P-Trap is soiled, so at one time there must have been some spill over.

Other than sending the line into the crawl space, there really isn't a good new location for the drain line.

What might be a better way to plumb the condensate drain into the home's waste water?

Thanks!

Murph

Advertisement

MurphyMan is offline   Reply With Quote
Old 04-17-2012, 08:50 PM   #2
I'm Your Huckleberry
 
Join Date: Mar 2011
Posts: 5,884
Rewards Points: 2,270
Default

AC condensate plumbed to septic


Not sure if tying into a septic line is even legal but I'm not in your area. It seems like it wouldn't be due to back odor and germs and whatnot.

Advertisement

__________________
Thanks.
Doc Holliday is offline   Reply With Quote
Old 04-17-2012, 08:58 PM   #3
Member
 
Join Date: Oct 2011
Location: Alabama
Posts: 250
Rewards Points: 188
Default

AC condensate plumbed to septic


If you tie into the septic system it must be in a sewer line (not vent stack) as I read. Your situation doesn't seem unusual or otherwise outside of code with exception it is recommended to tie into sink or bath plumbing. See THIS article.

You'll see two of the drawings are similar to what you describe and listed as ok. One drains directly into a sink. One drains into sink drain upstream of trap. As long as you have a trap then you should be protected from gases. It not being closed may be to protect sewer from backing into ac if plumbing ever clogged?

It all really depends on what is required or allowed in your jurisdiction.

Ralph

Last edited by Ralph III; 04-17-2012 at 09:07 PM.
Ralph III is offline   Reply With Quote
The Following User Says Thank You to Ralph III For This Useful Post:
MurphyMan (04-17-2012)
Old 04-17-2012, 09:03 PM   #4
Member
 
Join Date: Oct 2011
Location: Alabama
Posts: 250
Rewards Points: 188
Default

AC condensate plumbed to septic


Here is the actual article with diagram. I can't seem to edit my other post.

Ralph
Ralph III is offline   Reply With Quote
Old 04-17-2012, 09:06 PM   #5
I'm Your Huckleberry
 
Join Date: Mar 2011
Posts: 5,884
Rewards Points: 2,270
Default

AC condensate plumbed to septic




I'm guesing it's because there are no septic tanks down here that by code we can and do tie directly into the plumbing stack. They make special 2" and 3" with 3/4" tie in pvc fittings specifically to do so. Or if the stack is cut just above the ceiling and is lower than our condensate drain line (systems in the attic) we can simply ninety right from the top and drop into them.

Eh.
__________________
Thanks.
Doc Holliday is offline   Reply With Quote
The Following User Says Thank You to Doc Holliday For This Useful Post:
MurphyMan (04-17-2012)
Old 04-17-2012, 09:14 PM   #6
Member
 
Join Date: Oct 2011
Location: Alabama
Posts: 250
Rewards Points: 188
Default

AC condensate plumbed to septic


Like Doc descibed, it really can vary from one jurisdiction to another. OP may be best just calling his local Health/Permit Dept. and making an inquiry. Otherwise, others may chime in who can give definitive answer for his specific situation/location.

Ralph
Ralph III is offline   Reply With Quote
The Following User Says Thank You to Ralph III For This Useful Post:
MurphyMan (04-17-2012)
Old 04-17-2012, 09:21 PM   #7
Member
 
Join Date: Dec 2011
Location: Southern Illinois
Posts: 128
Rewards Points: 85
Default

AC condensate plumbed to septic


Here is my crude sketch of the current setup, which I don't really like. I really would like the condensate be plumbed to the septic, as an efficient way to get rid of the water. However, I want to do it using best practices for the situation.
Attached Thumbnails
AC condensate plumbed to septic-drain.jpg  

Last edited by MurphyMan; 04-18-2012 at 06:10 PM.
MurphyMan is offline   Reply With Quote
Old 04-17-2012, 09:26 PM   #8
Member
 
Join Date: Oct 2011
Location: Alabama
Posts: 250
Rewards Points: 188
Default

AC condensate plumbed to septic


OP, you really should contact your local municipality and inquire as to the best way of disposal. In my area, we ARE NOT allowed to drain into a sewer line that has a septic system. You must drain outdoors somewhere. They typically suggest digging a short type french drain and draining into that but flower beds may be just as good.

Take care, Ralph

Last edited by Ralph III; 04-17-2012 at 09:30 PM.
Ralph III is offline   Reply With Quote
The Following User Says Thank You to Ralph III For This Useful Post:
MurphyMan (04-17-2012)
Old 04-17-2012, 11:08 PM   #9
Member
 
Join Date: Dec 2011
Location: Southern Illinois
Posts: 128
Rewards Points: 85
Default

AC condensate plumbed to septic


After reading the articles, I am thinking I might be able to employ a $40 condensate pump to the water into the nearby laundry room and into the washing machine drain.

What do you folks think?
MurphyMan is offline   Reply With Quote
Old 04-17-2012, 11:14 PM   #10
I'm Your Huckleberry
 
Join Date: Mar 2011
Posts: 5,884
Rewards Points: 2,270
Default

AC condensate plumbed to septic


Perfect. You could even pump it all the way out of the home and into a French drain if you didn't want to tie into the septic line.
__________________
Thanks.
Doc Holliday is offline   Reply With Quote
The Following User Says Thank You to Doc Holliday For This Useful Post:
MurphyMan (04-17-2012)
Old 04-18-2012, 12:22 AM   #11
Member
 
Join Date: Nov 2011
Location: Hartfield VA
Posts: 27,781
Rewards Points: 678
Default

AC condensate plumbed to septic


In my area it's always just dumped outside into a small pit filled with stone, and never into a drain.
It's just clean water.
Why fill up your drain field with extra water?
joecaption is online now   Reply With Quote
Old 04-18-2012, 12:56 AM   #12
Member
 
Join Date: Oct 2011
Location: Alabama
Posts: 250
Rewards Points: 188
Default

AC condensate plumbed to septic


Quote:
Originally Posted by MurphyMan View Post
After reading the articles, I am thinking I might be able to employ a $40 condensate pump to the water into the nearby laundry room and into the washing machine drain.

What do you folks think?
As long as you're allowed to drain it into a septic system, then I agree with Doc and sounds fine to me. You however might consider (if allowed and practical) draining it outdoors like Joecaption stated, as you could just be adding unnecessary water to your septic system.

It sounds like you've got it under control though...

Take care.

Last edited by Ralph III; 04-18-2012 at 06:30 PM.
Ralph III is offline   Reply With Quote
The Following User Says Thank You to Ralph III For This Useful Post:
MurphyMan (04-18-2012)
Old 04-18-2012, 10:59 AM   #13
Member
 
Join Date: Apr 2012
Posts: 90
Rewards Points: 75
Default

AC condensate plumbed to septic


I think its more is that trap valid. It is very common to drain the AC into a sink trap normally connected under the sink where you can't see it. In your case it is more a question could you have a sink plumbed in the location. If you can then you can connect the AC to it but you never know with the crazy codes you may need a actual sink?

They key issue with that trap will be if the venting is proper. If it has a vent pipe you did not draw connected to something that goes to the roof then its most likely ok. If not you have to worry about the complex topic of wet venting.

As others have noted there is a great variation in the code if you can connect this to the drain. Where I am it is required to drain the main AC drain into the plumbing but you can run the backup/secondary ac drain directly out of the house.
bill01 is offline   Reply With Quote
The Following User Says Thank You to bill01 For This Useful Post:
MurphyMan (04-18-2012)
Old 04-18-2012, 01:48 PM   #14
HVAC Tech/Owner
 
Join Date: Nov 2010
Location: VA
Posts: 513
Rewards Points: 350
Default

AC condensate plumbed to septic


Quote:
Originally Posted by MurphyMan View Post
Here is my crude sketch of the setup. I really would like the condensate be plumbed to the septic, as an efficient way to get rid of the water. However, I want to do it using best practices for the situation.

I wouldn't do that...Backups happen and I wouldn't want any septic backup going to anything "open".

In my house, Condensate pump with large "loop" of condensate discharge tubing for a water seal. It never drained during the winter and the only weak link I worried about was relying on the check valve in the pump if the level of sewage raised above crawlspace level. It also passed in my jurisdiction.
Technow is online now   Reply With Quote
The Following User Says Thank You to Technow For This Useful Post:
MurphyMan (04-18-2012)
Old 04-18-2012, 06:09 PM   #15
Member
 
Join Date: Dec 2011
Location: Southern Illinois
Posts: 128
Rewards Points: 85
Default

AC condensate plumbed to septic


The more I look at this "simple" problem, the more I hate it.

Now i'm thinking to use the condensate pump to pipe up to the garage attic, then outside to the garage gutter. Due to the floor plan, there really isn't a great way to bring the condensate out of the garage near ground level.

My gutters have buried lines, which drain to a slope.

Then I can cap off the line in the crawlspace.

Advertisement

MurphyMan is offline   Reply With Quote
Reply


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
Trane XR90 - Condensate Drane Trap JDWorks HVAC 16 02-07-2012 08:59 PM
septic emergency? help! denemante Plumbing 47 11-21-2011 02:05 PM
Septic problem or vent problem? wilsonstark Plumbing 9 01-17-2011 07:35 PM
septic tank problems. littles Plumbing 1 02-24-2010 10:30 PM
Septic Newbie Needs Advice flyboy Plumbing 5 04-06-2009 07:05 PM




Top of Page | View New Posts