Vent Pipe | Clogged

Foul smells like "rotten eggs" (hydrogen sulfide) backing up into the house.

For deeper obstructions, a flexible plumber's auger is fed down the vent stack. The rotating action of the auger head breaks up obstructions such as compacted debris or small animal nests. Care must be taken not to damage older, brittle piping materials like cast iron or clay. clogged vent pipe

| Symptom | Possible Diagnosis | |---------|--------------------| | Pressure drop (vacuum) > threshold | Partial clog in DWV vent | | No flow with appliance on | Blocked exhaust vent | | Odor (H₂S/methane) detected | Sewer gas backing up | | Gurgling sound + slow drain | Air-starved vent stack | Foul smells like "rotten eggs" (hydrogen sulfide) backing