A boiler condensate pipe is an essential component of a modern condensing boiler. It is responsible for removing acidic water produced during the combustion process from the boiler to the outside of the property. The pipe is usually made of plastic and should have a steady fall to drain, depending on the location of the boiler.

During the winter months, the pipe can freeze due to low temperatures, preventing the water from draining properly and causing the boiler to shut down. If you notice that your boiler has stopped working, it's worth checking the condensate pipe for any signs of blockage.

To clear a frozen condensate pipe, you can try using hot water or a hairdryer to defrost the pipe. It's important to take precautions when thawing the pipe, such as turning off the boiler and avoiding contact with the pipe while it's still hot. If the blockage persists or you are unsure, you may need to call a qualified gas engineer to check the pipe and boiler.