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Frozen condensate pipe? Here’s how to get your boiler running again

News17 November 2025

With Met Office snow and ice warnings across the UK, many boilers may stop working due to a frozen condensate pipe.

The good news? It’s a simple fix — and you can usually do it yourself safely at home.

How do I know if it’s frozen?

✔ Part of your condensate pipe is outside

✔ You hear gurgling noises from the boiler

✔ You see error codes A01 or A61 on the display How to safely thaw your condensate pipe:

1️⃣ Locate the white plastic pipe outside your home. The blockage is often at a bend or at the end of the pipe.

2️⃣ Use warm (not boiling) water, a hot water bottle, or a cloth soaked in warm water to gently thaw the frozen section.

3️⃣ Once thawed, clear the fault and reset the boiler. I

It should start working normally again.

How to prevent it freezing again:

✔ Lag the pipe with weatherproof insulation

✔ Fit a drain cover to protect the end of the pipe Please check your condensate pipe before requesting an engineer, as frozen pipes aren’t covered by manufacturer warranty — and can usually be sorted in minutes.

Stay warm, stay safe.

Find out more https://ow.ly/uke050XtlP1

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