Why is my boiler leaking?

If you’ve noticed your standard or combi boiler leaking, the first steps to take are to examine the boiler itself, and all surrounding pipework.


If you’re asking ‘why is my boiler leaking?’ You should check for the following:


  • High boiler pressure
  • An error code on your boiler
  • Damp surfaces on or around the boiler
  • Dripping beneath it
  • Corrosion on the pipes


If you’ve taken a good look, and any of these issues are present, then there are steps you can take to help fix a leaking boiler, see our How-to Guides.


How old is it?


Boilers should last around 10 – 15 years. They need to be serviced every year, and you should look after it properly. Boilers lose efficiency over time. A 15-year-old boiler will be less efficient than a brand new one. This might mean your energy bills will be higher with an older boiler.


There are a few signs to watch out for that your boiler might need replacing. Here are some common ones:


  • Your boiler frequently breaks down or needs repairs
  • It takes a long time for radiators to warm up
  • Low or high hot water pressure
  • Hot water isn’t hot enough
  • The boiler makes strange noises
  • It keeps losing pressure
  • Your heating bills are unexpectedly higher


If any of these are happening in your household, it could be a sign that your boiler's getting on a bit and might need replacing soon.

Related FAQs

How long is the warranty on a Baxi boiler?

Baxi boiler warranties range from two-year parts and labour up to 10-year parts and labour, subject to being registered within 30 days of the boiler’s installation and an annual service being carried out.

What happens at a boiler service?

During a boiler service, your Gas Safe registered installer will carry out various checks, such as checking the gas pressure, ensuring safety devices are in good condition, and pipework is in a suitable condition. It will usually take around half an hour to complete a boiler service.

Why is my boiler leaking?

Checking for damp surfaces on or around your boiler, pipe corrosion, and water dripping beneath it can help identify if there is a leak.

What are the benefits of a boiler service?

Regular servicing can keep you and your family safe, save you money and keep your warranty valid. Find out more...

What should my boiler pressure be set at?

Normal operating water pressure for your boiler & central heating system is between 1.0 and 2.0 bar. Find out how to troubleshoot when the pressure drops.

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