Why Your Boiler Loses Pressure – And How to Fix It
- jameshinton14
- Apr 3
- 2 min read
A drop in boiler pressure can leave you with lukewarm radiators and an inefficient heating system. But why does it happen, and what can you do about it? At Mark Hinton and Son Plumbing & Heating LTD, we’re here to help you understand the causes and solutions.
What Causes a Boiler to Lose Pressure?
✅ Leaks in the System – Even a small leak in a pipe, radiator, or boiler can cause pressure loss over time. Check for damp patches or drips.
✅ Bleeding Radiators – Releasing trapped air from your radiators can cause a slight drop in boiler pressure. This is normal, but it may need topping up.
✅ Faulty Pressure Relief Valve – If your boiler’s pressure relief valve is leaking, it may be releasing water and causing pressure loss.
✅ Expansion Vessel Issues – The expansion vessel in your boiler helps regulate pressure. If it’s faulty, pressure may drop frequently.
How to Fix Boiler Pressure Loss
Check for Leaks
Inspect your system for visible leaks. If you find one, call a professional for repairs.
Repressurise Your Boiler
Most modern boilers have a filling loop to top up pressure. Open the valves carefully and increase pressure to the recommended level (usually 1-1.5 bar).
Monitor for Recurring Issues
If pressure drops again quickly, it could indicate a bigger problem that needs expert attention.
Why Choose Mark Hinton and Son Plumbing & Heating LTD?
If your boiler keeps losing pressure, don’t ignore it. Our expert team can diagnose and repair any issues, ensuring your heating system runs efficiently and safely.
Contact Us Today!
Struggling with boiler pressure? Contact Mark Hinton and Son Plumbing & Heating LTD for expert boiler maintenance and repairs.
Visit www.markhintonplumbing.co.uk to book an appointment today!
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