Life Expectancy of a UPS?

UPS Life Expectancy depends on its working environment, the load it protects and whether it is been regularly maintained and serviced.
Many clients ask us this question and as you would expect there is no hard and fast rule. As a rule of thumb 10-15 years is the absolute maximum life expectancy of a large UPS power system.

Following a regular maintenance regime will extend the life and efficiency, avoiding waste energy. A modern UPS can be 96% + efficient and even more for TRUE on online double conversion UPS models. Whereas a 15 year old UPS model, will only have been 70%- 80% efficient at time of manufacture and due to the age, we have seen efficiencies as low as 50%. This is particularly the case if the UPS is not significantly loaded and if the phases are unbalanced.

Over a year this amounts to a significant cost for wasted electricity, which then makes buying a brand new UPS a very smart return on investment.

So for a rule off thumb for UPS Life Expectancy, we suggest the following guide:

  • Small UPS of low voltage – Max 5 Years
  • Large UPS Floor Standing – 10 to 15 years maximum
  • Critical UPS systems – Mission Critical – 10–12 years maximum

Batteries of course have a shorter life – Check your supplier

For more information on UPS Life Expectancy – contact Power Continuity on 0845 055 8455 – Our UPS engineers are here to help you

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