Why is my boiler making a bubbling noise?

There's a gurgling or bubbling sound coming from the boiler when the heating is on. It's a 6-year-old combi. Is this something that needs looking at urgently?

Asked by Lou on 4th May 2026
Expert Trade Answers
"This could be due to scale build up in your boiler"
Answered on 4th May 2026 - Member since Jan 2023 - report
"Definitely air in the system most likely due to leaking washers restriction etc i would switch it off to prevent it kettling until an engineer can have a look at it"
Answered on 4th May 2026 - Member since Aug 2025 - report
Find Tradespeople, compare up to 3 quotes!
It's FREE and there are no obligations
Ask a Trade
Got a question that only a tradesperson can answer? We have thousands of trades ready to answer any question you may have.
Ask your question
Ask a Trade

Are you looking for advice on a DIY project or have a question for our tradespeople?

We'll email your question to tradespeople who are skilled in your chosen category.

Your question will be made public - please do not include any personal details.

{{ first(ask.errors)[0] }}

By continuing you agree to the Community Guidelines.

Report Content

{{ first(reportForm.errors) }}

Thank you

Your report has been created and will be investigated shortly.

Ready to get a price for your home improvement project?
Get started

Over 1 million homeowners and over 50,000 tradespeople
use MyJobQuote nationwide each year