Choosing the right dimmer for LED lights requires checking several factors. First, identify the dimming protocol your LED fixture supports: TRIAC (forward phase), ELV (electronic low voltage / reverse phase), 0-10V, or DALI. Second, check the dimmer's minimum load requirement — many standard dimmers need 25-40W minimum, which can be a problem with low-wattage LEDs causing flicker at low settings. Third, consult the LED manufacturer's compatibility list, as driver-dimmer combinations can be finicky. Fourth, consider the number of fixtures on the circuit and total wattage. For commercial installations, use 0-10V or DALI dimming systems rather than residential TRIAC dimmers. Always test a dimmer with your specific LED fixture before full installation, as real-world performance varies.