LED bulbs frequently fail to work correctly with older standard dimmer switches because traditional dimmers were engineered for high-wattage incandescent and halogen loads, utilizing a mechanical rheostat or basic triac that requires a heavy electrical load to function. Modern LED bulbs draw very little electrical current, causing them to flicker, drop out, or refuse to turn on when paired with legacy dimmers. Solving this requires upgrading to an LED-compatible electronic dimmer and using bulbs explicitly rated as "dimmable LEDs." Verification: Test the LED bulbs with an LED-rated phase-adaptive dimmer to ensure smooth, flicker-free dimming performance across the entire slider range.
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