An LED (Light Emitting Diode) bulb is a highly efficient lighting solution that produces illumination by passing an electric current through a semiconductor material. Unlike traditional incandescent bulbs that rely on a heated filament, LEDs generate very little heat, converting the vast majority of energy directly into light. They are known for their exceptional longevity—often lasting 25,000 hours or more—and their ability to provide a wide range of color temperatures, from warm yellows to cool daylight blues. Because they consume significantly less wattage to produce the same level of brightness (lumens), they are a cornerstone of modern energy conservation and sustainable home design.