[gramma5]

Periodically, we get sewer gas smells from our kitchen sink [and cabinet]. We've had to replace our AAV four times in the last three years. It's located under the kitchen sink [in an island]. We've had several plumbers come out, and they all just scratch their heads. Any suggestions?

[ma0641]

I'd scratch my head too! I have 2 houses, 5 AAV's, total of 17 years between both, never had to change an AAV. Are you using Studor AAV's?

[ballengerb1]

Which brand and model are you using and what was the warranty? Did the plumber confirm the AAV was the source of the odor?

[gramma5]

Yes, it's definitely the AAV because, once it is changed - the odor is immediately gone.
Not sure if this helps, but - there's always a lot of moisture inside the discarded unit. We've tried to let it dry out for a few months, to reuse them, but - they don't work then. So we just used new ones.They last between 9 months to a year.
As to which brand we buy. The plumbers have tried several, and the only one that seems to work is the Sure-Vent® Air Admittance Valves by Oatey®
[]Auto vents and automatic home sewer vents from FAMOUS PLUMBING SUPPLY. We need only the white top part of this unit, not the black base.

[gramma5]

Yes, it's definitely the AAV because, once it is changed - the odor is immediately gone.
Not sure if this helps, but - there's always a lot of moisture inside the discarded unit. We've tried to let it dry out for a few months, to reuse them, but - they don't work then. So we just used new ones.They last between 9 months to a year.
As to which brand we buy. The plumbers have tried several, and the only one that seems to work is the Sure-Vent® Air Admittance Valves by Oatey®
[]Auto vents and automatic home sewer vents from FAMOUS PLUMBING SUPPLY. We need only the white top part of this unit, not the black base.

Any suggestions?