Drain Vent: Clogged

You’ve tried the plunger. You’ve used the snake. You’ve even poured boiling water down the drain. But the water still drains slowly, gurgles, or smells bad.

It’s the vertical pipe that runs from your plumbing system up through your roof. It doesn’t carry water—it carries air . Its job is to equalize pressure so water can flow freely down your drains and to vent sewer gases safely outside. clogged drain vent

This is the most common symptom. If you flush the toilet and hear a gurgling sound coming from the bathtub drain or the sink, it means air is trapped. The air is trying to escape through the water in the other traps, creating that bubbling noise. You’ve tried the plunger

However, if you have tried clearing the drain and the problem persists, the issue may not be where the water is , but where the air isn't . But the water still drains slowly, gurgles, or smells bad

A blocked vent can cause P-traps to dry out, allowing toxic sewer gases like methane and hydrogen sulfide to enter your home.

: Severe winter weather can cause frost or snow to block the vent opening on the roof.