Keston
Condensate / Flue Condensation Issue
Boiler flue terminal shows white staining or water dripping excessively
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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
Incorrect flue fall, Condensate not draining properly, Flue joint leakage, Oversized flue
How to Fix / Troubleshooting
Safety: Condensate is mildly acidic. Avoid prolonged skin contact.
User actions:
- Observe and report where water is dripping from (terminal, joints, wall) to the engineer.
- Do not attempt to dismantle the flue yourself.
Engineer actions:
- Inspect the Keston flue system for correct gradient back to the boiler and for any low points where condensate can collect.
- Check all flue joints for integrity and reseal or replace sections if leaking.
- Verify that the condensate trap and pipework are clear and correctly connected.
- Ensure flue installation complies with Keston and regulatory requirements.
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Repair Difficulty
Hard
4/5
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