Can I turn water off and leave combi boiler on?

Is this OK to do if I need to while doing other work, or do I have to shut everything off including the boiler

Asked by Jenny on 7th Feb 2026
Expert Trade Answers
"You’re heating will work, but you will not have hot water"
Answered on 7th Feb 2026 - Member since Aug 2023 - report
"Yes. Providing you don’t want hot water
The heating will still function"
Answered on 7th Feb 2026 - Member since Mar 2023 - 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