Is it within code (UPC or Residential) to service and vent an air admitance valve (AAV) to the outside of house? I live in the area of Redmond, WA.
The plumbing is on an external wall and first floor. It seems just as easy to vent externally behind a removable grill as it is inside. I think STUDOR vents are spec'd to be vented internally or externally if not exposed to weather elements.
The plumbing is on an external wall and first floor. It seems just as easy to vent externally behind a removable grill as it is inside. I think STUDOR vents are spec'd to be vented internally or externally if not exposed to weather elements.