Wednesday 15th February 2023

Maintaining hot water storage systems

Unvented hot water storage vessels are complex systems requiring regular maintenance to ensure they function safely and efficiently.

Unvented hot water storage vessels are complex systems requiring regular maintenance to ensure they function safely and efficiently. The routine checks should be carried out by a qualified installer at least once in 12 months, but more frequent maintenance may be necessary depending on local water conditions such as hardness or high levels of solids like sand.

A qualified installer can assess the system and perform any necessary checks or maintenance. It is important to keep the system in good condition to prevent potential safety issues and maintain its performance.

Steps to maintaining hot water storage systems

Inspection: The first step is to inspect the system for any visible signs of damage or wear and tear.

Pressure check: The pressure in the system should be checked to ensure it is within the manufacturer's recommended range.

Temperature check: The temperature of the hot water should be checked to ensure it is safe for use.

Expansion vessel check: The expansion vessel should be checked for proper operation and to ensure it is free from leaks.

Valve check: The valves in the system should be checked for proper operation and to ensure they are not leaking.

Relief valve check: The relief valve should be checked to ensure it operates correctly and discharges water if necessary.

Flushing: The system should be flushed to remove accumulated debris and maintain water quality.

Cleaning: The system should be cleaned to remove any scale or deposits that may have accumulated.

Testing: The system should be tested to ensure it functions correctly and safely.

Find out more about our ongoing building maintenance services that support facilities managers in the efficient running of systems as well as satisfying warranties.

  • Safecontractor
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