Remedy for AAV concealed in wall?

aavguy

aavguy

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Apparently I have an AAV in my bathroom wall that works for both my sink and toilet. It is 4 to 5 feet above the floor. I haven't had any problem with it, but am worried about it possibility of it failing and leaking sewer gas into the wall. What is the best solution for this? I was thinking about putting a small vent in the wall for accessibility and to help vent in case the AAV did leak sewer gas. Is this a good option?
Thanks
 
Code is AAV's must be accessible. I guess there was no inspection on the original job. Either extend the AAV to the attic or run the vent through the roof.

John
 
I see Oatey makes a 4" x 6" access panel with optional vents... this might be the ticket. Heck, i might be able to hide the access panel behind my towel bar... looks like the right height.
 
Thanks for the quick reply! Wasn't sure, because I kept wondering if sewer gas would leak straight up into the wall, or towards the easiest exit (the panel vent).
 
The AAV is designed to let air suck in.
When you hold your finger over a straw, it doesn't drain.

The AAV is supposed to prevent air from escaping, but allows air to suck in and allow draining.
It needs to be installed in conjunction with a "real" vent somewhere in the system to account for positive and negative pressures.
The AAV is only good for the negative pressures.
 
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