No, high-quality LED light bulbs and fixtures are not supposed to hum or produce an audible buzzing noise during normal operation. While a very faint, nearly imperceptible electrical hum close to the lamp can sometimes occur when inexpensive LEDs are paired with older phase-control incandescent dimmer switches, a loud or noticeable buzz indicates electrical incompatibility between the LED's internal driver and the power supply waveform. You can troubleshoot acoustic noise easily by testing alternative bulb brands. You can verify that your corrective action is successful when replacing generic non-compliant bulbs with high-quality, manufacturer-certified dimmable LED lamps or upgrading your dimmer to an LED-rated unit ensures completely silent, buzz-free room illumination.
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