The answer to 'why is my humidifier making loud noise' is that there are several common causes, including mineral buildup, a worn-out fan motor, or a problem with the water supply. Loud noises from a humidifier can indicate an issue that needs to be addressed.
One of the most common causes of loud noises in a humidifier is mineral buildup from hard water. Over time, minerals can accumulate on the humidifier's internal components, causing them to grind against each other and produce loud, grating sounds. Another potential issue is a worn-out or malfunctioning fan motor, which can also lead to loud, rattling noises. Problems with the water supply, such as low water pressure or a blockage, can also cause the humidifier to make loud noises as it struggles to function properly.