Why has my boiler stopped working in cold weather?

Frozen condensate pipes are one of the most common winter boiler problems. Here's how to identify and fix the issue: **What is the Condensate Pipe?** Modern condensing boilers produce acidic water (condensate) as a byproduct. This drains outside through a small plastic pipe, usually white or grey. **How to Identify a Frozen Pipe:** - Boiler displays error code (common codes: F1, F28, E133) - Gurgling sound from boiler - Boiler locks out and won't restart - Freezing temperatures outside **Safe DIY Fix:** 1. **Locate the pipe** - Usually exits through an external wall near the boiler 2. **Pour warm water** - NOT boiling! Use lukewarm water and pour over the frozen section 3. **Use a hot water bottle** - Place against the pipe to thaw gradually 4. **Reset the boiler** - Once thawed, press the reset button **Prevention Tips:** - **Insulate the pipe** - Foam lagging from any DIY store (we can do this during your annual service) - **Run heating overnight** - During cold snaps, keep heating on low to prevent freezing - **Increase pipe diameter** - We can upgrade to 32mm pipe which freezes less easily **When to Call Us:** - Pipe is frozen inside the wall - You can't locate the condensate pipe - Boiler won't restart after thawing - Multiple freeze-ups in one winter (may need rerouting) **Common in West Midlands:** Wolverhampton, Cannock, and Stafford regularly see temperatures below -5°C in winter. We recommend insulating condensate pipes before November. For emergency callouts when your boiler freezes, call NK Gas Services on 07404 922458.