LED bulbs are super energy efficient; presently they are up to 80% more efficient compared to incandescent lamps and up to 50% more efficient than fluorescent lamps. LEDs are compact semi-conductor (no filaments to break) sources that allow compact, flexible designs using color as never before possible. The PHILIPS LEDs available on our website are rated at 25000 hours life; Bulbwizards LEDs (pool, spa, chromatherapy and nature safe lights) are guaranteed for three years and will last up to 100,000 hours. All LED lights are instant on and are silent, unlike CFL and some fluorescent lamps. Another great feature of LED lights is that they contain no hazardous materials, so they are good for the environment..