Life hours is an average rating to give the user an idea of how long the lamp may last. This rating for incandescent bulbs was determined by testing a group of lamps and using the amount of time (hours) where 50% fail. For LED this is tested in a similar way but is defined by the amount of time (hours) until the LEDs lumens have depreciated by 30% the bulbs original output. Life hours is not a guarantee, is it the average lamp life, some may last longer, some may fail earlier, and yes, your LED light can still fail. If it does happen to fail, our products have a warranty so not to worry, we have your back.