How to Tell If Air Admittance Valve is Working: Easy Signs
Every home’s plumbing system hides some secrets behind the walls. One of the smallest—but most vital—parts of modern drainage is the air admittance valve (AAV). If your sinks bubble, drains smell, or water gurgles in pipes, you might wonder if your AAV is working right. Knowing how to tell if an air admittance valve is …