Boilers · 2 min read
Frozen condensate pipe: the 5-minute fix
Boiler stopped on a cold morning? This is the most likely cause.
Condensing boilers drain water through a plastic pipe to outside. In a hard frost it can freeze, and the boiler locks out, often with a fault code.
- Find the white or grey plastic pipe from the boiler to outside
- Pour warm (not boiling) water slowly along it
- Reset the boiler
- Lag the pipe to stop it happening again
If it keeps happening, we can reroute or upsize the pipe, usually in under an hour.
Written by the Croston team. Reviewed by Wayne Gemson, founder and Gas Safe engineer.
