How to increase boiler pressure?

My boiler pressure has dropped below 1 bar, which I don't think is good? What's the correct way to top it up safely?

Asked by Abdul on 2nd Apr 2026
Expert Trade Answers
"Call an engineer as you might have an issue with your boiler"
Answered on 2nd Apr 2026 - Member since Feb 2025 - report
"Depend on installation. Check under the boiler if there is flexi pipe two black knobs open them and hear water moving."
Answered on 2nd Apr 2026 - Member since Aug 2025 - report
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