How to thaw a condensate pipe
If your condensate pipe has frozen, don’t worry, this can be resolved in just a few steps without even having to contact a heating engineer.
It’s important to find the blockage before taking any further actions so that you know you’re thawing out the right part of the pipe. This often occurs where there is a bend or dip in the pipe.
Once you’ve located the blockage, there are several ways that you can unfreeze the condensate pipe:
- Apply a hot water bottle, microwaveable heating pack or warm cloth to the frozen part of the pipe.
- Pour warm water over the frozen part of the condensate pipe using a watering can.
- Do not use boiling water as it could cause the plastic pipe to melt or split due to the sudden temperature change to boiling water.
- Always be careful when pouring warm water if the pipe is at a slightly higher level.
- Pro tip – Always work from the open pipe end (drain or connection end) back towards the building. This will hopefully help prevent melted ice water from re-freezing as it is still stuck behind the frozen plug.
After unfreezing the pipe, you might need to reset the boiler to get it going again. Some boilers will reset automatically, so it’s best to take a look in the boiler’s manual (or online) for next steps.