dydx
New Member
Unfortunately so many things are messed up in the house I moved into last year. One of them:
Even though I never smelled sewer gas and never had any issues, it seems that the standpipe for my washer is not trapped (*). The standpipe just disappears in the wall via a few elbows and then goes straight down into the basement into a horizontal sewer line. I would like to fix this and along the way drain my HPWH condensate drain as well.
Please see the current setup along with a picture on the left. On the right, how I would want to install a part like this. As far as I know this would not be perfectly compliant because the washer should have 2". Hence I would consider building exactly the same myself out of PVC or ABS fittings.
Can I add a p-trap + AAV to the existing horizontal line, as shown?
Note: As far as I know AAVs are allowed where I live, but even if not, it would only improve the situation. I do not have the resources to create another vent or to connect to the vent from the BR sink. It is buried inside the wall and I do not want to open the wall.
(*) I was sticking down fishing tape with a tissue and from its length, it went approximately until the horizontal line in the basement. When I pulled it out, everything was bone-dry so I concluded there is no trap.
Even though I never smelled sewer gas and never had any issues, it seems that the standpipe for my washer is not trapped (*). The standpipe just disappears in the wall via a few elbows and then goes straight down into the basement into a horizontal sewer line. I would like to fix this and along the way drain my HPWH condensate drain as well.
Please see the current setup along with a picture on the left. On the right, how I would want to install a part like this. As far as I know this would not be perfectly compliant because the washer should have 2". Hence I would consider building exactly the same myself out of PVC or ABS fittings.
Can I add a p-trap + AAV to the existing horizontal line, as shown?
Note: As far as I know AAVs are allowed where I live, but even if not, it would only improve the situation. I do not have the resources to create another vent or to connect to the vent from the BR sink. It is buried inside the wall and I do not want to open the wall.
(*) I was sticking down fishing tape with a tissue and from its length, it went approximately until the horizontal line in the basement. When I pulled it out, everything was bone-dry so I concluded there is no trap.
