Although it may seem obvious, extended product guarantees do not actually reduce your overall running costs. In contract they increase the real upfront cost of the LED product, bind you to a fixed technology for a long period of time, and thus reduce your ability to take advantage of latest technology such as improved energy efficiency and smart lighting. It is simply more efficient and effective to maintain your lighting system as an ongoing concern, ideally at a fixed monthly cost, rather than invest in the capital ownership of a fixed technology over a long period of time.