Air Admittance Valve Problems: What Can Go Wrong and How to Fix It
Air admittance valves (AAVs) are a modern solution to old-school venting issues. They let air into your plumbing system to equalize pressure—but keep sewer gas out. No roof stack, no cutting into walls. Sounds perfect, right? Well, almost. While AAVs solve a lot of installation headaches, they come with their own quirks. If your sink … Read more