My Humidifier Baffle Is Noisy


Humidifies can create a variety of noises, some to be expected and some that indicate problems. The humidifier baffle is the vent or panel that controls the flow of air that has passed through the humidifier. If it starts to make noise, the problem could be related to the baffle and how it is installed on your system, but keep in mind other potential causes near the baffle as well.

Common Noise

  • If you have just bought a humidifier, do not fret over the sounds it makes when you first start using it. Humidifiers can click, gurgle and shudder during operation. These are the natural sounds of the water, solenoid and evaporator mechanisms working. Although they might be more noticeable near the baffle where sound can exit more easily, they might not indicate a problem. If the baffle itself is vibrating or making noise, this is something you can fix.


  • If your baffle is vibrating and rattling every time you use the humidifier, this could be a sign that the system is not attached properly. If the baffle and other components are not screwed together tightly, vibrations can build up, making noise around the parts of the system that are more loose by nature, like the baffle. Check your bolts and screw them in or replace them, if necessary.


  • The moisture that the humidifier emits contains heat. Over time, the combination of heat and moisture can corrode or warp materials. This includes any metal vents or baffles installed as part of your system. You cannot usually repair this kind of warping. Your best bet is to replace the baffle and set the humidifier to a lower setting so that it does less damage to your system.


  • Dehumidifiers use filters to protect both air and water from contaminants. The presence of water and heat can cause these filters to fill with dirt and mold easily. Obstructed air and water flow can cause unusual noises in your dehumidifier which may be especially noticeable around the baffle. Clean and replace your filters to determine whether the sounds diminish or stop.

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