An air admittance valve vents a drain without a pipe through the roof. Here is the Philadelphia guide.
The job
The valve opens to let air into the drain and closes to keep sewer gas out.
The use
It solves venting for islands, remodels, and fixtures far from a stack.
The limits
Some codes restrict where AAVs can be used, so check before installing.
The call
Vent it correctly and to code. Call 888-217-3585 and Philadelphia Plumbing Pros will match you with a Philadelphia pro.
Plumbing in Philadelphia: what to know
In Philadelphia, freezing winters put stress on exposed lines, and many older city rowhomes have aging supply lines. Pros in our network know the local quirks and bring the right parts on the first visit.
Across Philadelphia County — from Palmyra, Camden and Collingswood to ZIP codes like 19140, 19133, 19120 — homeowners deal with the same kinds of issues. The tips above apply locally, and when a job goes beyond a quick fix, a vetted local pro is only a call away.
Need a hand in Philadelphia?
If a plumbing issue is beyond a quick fix, don't wait for it to get worse. Call 888-217-3585 and Philadelphia Plumbing Pros will match you with a vetted local pro — usually within minutes. Learn more about plumbing help in Philadelphia.