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    Expansion Vessels

    The expansion vessel is a crucial element of any modern heating system, it ensures the safe and efficient operation of your boiler by maintaining pressure balance. Expansion vessels absorb the increased water volume that results from heating which prevents pressure from rising too high. Our selection of expansion vessels are of the highest quality, and they are the best option if you choose to upgrade your boiler.  

    Signs you may need a new boiler expansion vessel 

    Expansion vessels may lose their effectiveness over time, this could be due to wear and tear. Signs that you may need a replacement include:  

    • Fluctuating pressure  
    • Boiler leaks  
    • Constant system re-pressurising  

    If you notice any of these issues, it is essential that you replace your expansion vessel as soon as you can to quickly prevent any further damage to you heating system.   

    Shop our range of boiler expansion vessels including popular brands such as BaxiWorcesterVaillantIdealGlowworm and more. Try shopping our range by using our search bar above to find your specific boiler expansion vessel by parts or GC number with ease.  

    Expansion Vessels – FAQs  

    What is the expansion vessel in a boiler?  

    An expansion vessel is an important component of a boiler’s heating system. It regulates pressure levels and maintains safety in the system.   

    What does an expansion vessel do on a boiler?  

    The expansion vessel acts as an overflow tank to relieve pressure which brings it down to the usual level a lot quicker.  

    What happens when a boiler expansion vessel fails?  

    If a boiler expansion vessel fails, it can cause several issues such as, low boiler pressure, high boiler pressure, inefficient heating, increased energy consumption, ad boiler discharging excess water.   

    Do you need an expansion vessel with a system boiler?  

    An expansion vessel is required to maintain a constant water pressure and to prevent any damage that could happen to the system.