Bryant Flue Condensation / Venting Problem

Water dripping from metal vent pipe on an 80% Bryant furnace or staining ceiling above furnace.

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Improperly sized metal vent, insufficient chimney liner, long horizontal vent runs, low flue gas temperature

How to Fix / Troubleshooting

Safety warning: Flue condensation can lead to corrosion and flue failure, risking carbon monoxide leakage.

  • Inspect vent connections: Check all vent joints for gaps or corrosion. Tighten screws and reseal with high-temperature sealant where appropriate.
  • Check vent slope: Ensure the metal vent slopes upward at least 1/4 inch per foot toward the chimney or termination.
  • Look for blockages: Inspect the vent termination for bird nests or debris.

Vent sizing and chimney liner installation must follow code and manufacturer instructions; have a professional evaluate and correct venting if condensation persists.

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Repair Difficulty

Hard 4/5

Required Part

Flue Vent Pipe
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