A long life is one of the ways on how to choose the right led light bulb. The life of an LED is defined as the average number of hours until light falls to 70 percent of initial brightness. The life of a high-power white led is projected to be from 35,000 to 50,000 hours, however the bulb won’t actually go out until about 100,000 hours. Incandescent bulbs on the other hand will last only 750-2000 hours before they go out, CFL bulbs die after 8,000 to 10,000 hours, and a linear fluorescent bulb will last 20,000 to 30,000hrs. This means that 1 LED will last longer than 17 times the life of an incandescent, and at least 3 times the life of a CFL.