LED Lighting Why Purchase LED Lighting? Changing conventional light bulbs (such as incandescents, fluorescents, and halogens) to LEDs can lead to big savings. LEDs use less energy, cost less to operate, and can last up to 25 years longer. LEDs also maintain easy, quick, and low-cost installation—and can offer superior dimming controls to adjust lighting to suit your room. Replacing your five most commonly used light bulbs with ENERGY STAR® certified LED models can save up to $75 a year. The Lighting Buyer’s Guide will help you learn more, including how to choose the right LEDs.