LED and CFL bulbs are both types of energy-efficient lighting. But they differ in several ways. LED bulbs use less electricity than CFLs and last up to 25 times longer. They also don't contain any mercury. Where CFLs contain a small amount. LEDs also produce brighter light and operate faster. So they're perfect for applications that require instant illumination. On the other hand, CFLs have a more natural color temperature. They were initially less expensive.