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How to Fix a Frozen Condensate Pipe

How to Fix a Frozen Condensate Pipe

During the winter months, when the weather is particularly cold, boiler condensate pipes can freeze.

If your boiler is showing an error code or a series of flashing lights on a particularly cold day, check your boiler manual as a frozen condensate pipe could be the problem. The following steps will help you to defrost the pipe.

Step 1 – Locate the boiler condensate pipe

It tends to be either a white or black plastic pipe that runs from your boiler to outside and down to the nearest drain.  As this pipe is exposed to outside conditions it is easy for the pipe to freeze causing the water inside to turn to ice and block the pipe to the boiler.


Step 2 – Unblock the drain

Remove any ice or leaves etc. from the drain that the condensate pipe runs into

Step 3 – Defrost the pipe

The quickest way to defrost a frozen condensate pipe is to pour boiling hot water directly over it. Start at the end of the pipe that is closest to the drain and then work your way up the pipe until you reach the top where it enters the wall.  You may need to do this more than once to thaw all of the ice.  You may also find that you need to repeat this step more than once in a day if the weather is particularly cold and the pipe freezes again.

Step 4 – Re-set your boiler

Once the pipe has fully thawed return to your boiler and press the re-set button. Your boiler should then begin to operate as normal again.


If the boiler continues to display an error code/flashing lights call us on 0191 5492316 as the boiler may have another fault.

If you have persistent problems with your condensate pipe freezing we can advise on different methods of insulating exterior pipework to stop it from happening.


Winter is Here

Winter is Here

The winter is now in full swing, the promise of snow and ‘weather bombs’ mean it truly is getting colder out.
Now is the time to make sure your heating is operating to it’s maximum efficiency.

Central Heating & Boiler Care Plans
Peace of mind 365 days a year.  Don’t find yourself caught out during bad weather.

Breakdowns in your hot water supply or heating system can occur just when you least expect it, and can take time and be expensive to fix, with boiler parts such as the heat exchanger costing up to £350 plus labour to replace.

Our central heating and boiler service plans care for your boiler all year round to help to ensure it performs at its best, don’t worry if something should go wrong one of our Gas Safe registered engineers will come out to you.

To discuss our Service Plans further, call us on 0191 549 2316.
Urgent Gas Repairs in Tyne & Wear
If you need a gas repair you should phone Seaburn Gas on 0191 549 2316.

CONTACT US TODAY - 0191 549 2316