A boiler that keeps dropping below 1 bar and needs constant re-pressurising has an underlying fault. Our Gas Safe engineers trace and fix the cause across Dorset and Dorset.
Vetted, Gas Safe registered engineers · same-day & 24/7 emergency cover across Dorset & Dorset.
The fault
When your boiler keeps losing pressure
If you’re topping the boiler up every few days, pressure is escaping somewhere. The usual culprits are a small system leak, a failed pressure-relief valve or a waterlogged expansion vessel.
Repressurising is only a temporary fix, the pressure will keep dropping until the cause is repaired, so it’s worth getting it looked at before it leaves you with no heating.
Common causes we find
✓A small leak on radiators, valves or pipework
✓Failed pressure-relief valve venting outside
✓Waterlogged or failed expansion vessel
✓Recently bled radiators dropping the pressure
✓Corroded or weeping joints
How we deal with it
1
Find the leak
We pressure-test the system and inspect valves, the expansion vessel and pipework to locate where pressure is escaping.
2
Quote before we start
A clear fixed price for the repair before we begin.
3
Repair and repressurise
We fix the cause, recharge the expansion vessel if needed, repressurise and confirm the boiler holds pressure.
Our guarantee
Every boiler repair is backed by our 90-day or 365-day same-fault repair guarantee when you start a premium home membership. All gas work is carried out by Gas Safe registered engineers, and parts and labour are covered, subject to the stated exclusions.
Areas we cover
Boiler losing pressure across Dorset, Poole, Christchurch and the surrounding Dorset and New Forest areas:
