Incandescent lamps: • Appear “warm” in color and have excellent color rendering. • Are the least efficient of general lamp types due to the amount of energy consumed heating the filament in order for the lamp to turn incandescent. • Have a short lamp life of between 500 and 3,000 hours. • Are easy to install because no ballast is required. Fluorescent lamps: • Are available in a complete range of color combinations. • Produce low heat. • Require a more extensive installation because ballasts are a necessary part of the fixture. • Have an extremely long life of up to 24,000 hours. • Due to smaller sizes and screw base features, fluorescent can replace incandescent lamps. High-intensity discharge (HID) lamps: • Are ideal for large stores, warehouses, auditoriums, outdoor parking areas, and applications where efficiency is a priority. • Have a warm-up period, which results in slower start-up. • Deliver a large amount of light over a wide area. • Have a long life of between 5,000 and 24,00