Now we know LED bulbs are more expensive to purchase than standard ones; however, LED bulbs work for years on average running for between 25,000 – 50,000 hours before they need to be replaced.
So, if you bulbs run on a 24/7 basis equals between 3-6 years, standard & Halogen bulbs last between 2,000 – 4,000 hours, which means those on 24/7 would need to be replaced 2-4 times a year. If we take an average non-LED bulb needs replacing say every 3000 hours, almost three replacements are required a year. Over three years, this is at least nine replacements, so these cheap bulbs ultimately cost more than the LED bulb equivalent. This does not take into account the time spent replacing the bulbs, which in this case that amounted to over 1000 light bulb changes a year. On top of the 90% saving on the electricity bill, you will see other savings in staff costs as you won't be replacing 1000 bulbs per year.