An expansion vessel plays a vital role in maintaining safe and stable pressure within your heating system. If it becomes faulty, you may notice pressure fluctuations, leaks or repeated boiler shutdowns. At Alliance CFM, we provide professional expansion vessel replacement services, ensuring your heating system operates efficiently and safely.
Why an Expansion Vessel Is Important
An expansion vessel absorbs the natural increase in water volume as it heats up within a sealed heating system. Without a functioning vessel, pressure can rise excessively, placing strain on the boiler and other components. Over time, this can lead to system faults, water discharge from the pressure relief valve or damage to internal parts. A properly functioning expansion vessel protects your boiler, helps maintain consistent system pressure and supports overall heating performance.
Signs You May Need an Expansion Vessel Replacement
There are several indicators that your expansion vessel may need replacing. These include frequent drops or spikes in boiler pressure, water leaking from the pressure relief pipe or the need to regularly top up the system. In some cases, your boiler may display recurring fault codes related to pressure issues. Ignoring these signs can place unnecessary stress on your heating system and potentially lead to more costly repairs.
Professional Expansion Vessel Replacement
Our engineers begin with a full system assessment to confirm whether the expansion vessel is the source of the issue. If replacement is required, we safely isolate and drain the system where necessary before installing a suitable new vessel that matches your boiler and heating configuration. Every replacement is completed with careful testing to ensure stable system pressure and correct operation. We also check related components to confirm the system is functioning as intended.
Domestic and Commercial Services
Alliance CFM carries out expansion vessel replacements for both domestic and commercial heating systems. Whether in a private home, rental property, office, or larger commercial building, we deliver reliable workmanship and clear advice throughout the process. Maintaining correct system pressure is essential in all environments, and our team works efficiently to minimise disruption while restoring proper heating performance.
Book an Expansion Vessel Replacement
If you are experiencing pressure issues or suspect a fault with your expansion vessel, contact Alliance CFM for professional assistance. Call 01182301268 to speak with our team or email contact@alliancecfm.com to arrange a visit.



