Quiet dehumidifier
Anything involving mechanical part will surely produce sound and noise. Even electronics part also sometimes may produce noise.
Noise are generated due to many factors; friction between two components such as car tires and the ground, air friction such as air blower and vacuum cleaner, jumping of electrons such as lightning. However, all those noise produced by the phenomenon above can be explained with a single theory, vibration. When the air moves through the blower, its particles do not move in a streamline; instead, they move randomly to the same destination. When the particles moving randomly hit the surface of the blower, a little unnoticeable noise is produced. However, when many particles do the same, noise level is amplified, and that is how noise is produced.
For a dehumidifier, especially one with mechanical compressor will generate high pressure and velocity flow. Therefore, noise is being created due to particles vibration under pressure. However, by balancing the compressor work required and the noise level generated, noise can be reduced accordingly. In addition to that, a noise damper can be used around the machine to damp the vibration and thus reduce the noise to certain extent.
For home use, a dehumidifier needs to be of low noise so that it will not create problem to the residence. Exposure to noise, especially high noise level, in the long run will disturb one’s emotion, which is not good for health of that particular person. Therefore, a quiet dehumidifier is a must, especially for small area of use.
One good example of low noise dehumidifier is Soleus CFM40. It is a compressor driven dehumidifier, which can cover areas up to 500 feet2, and it only produces 43 db(A), which is a big achievement for a compressor based dehumidifier.
Another good example is Mitsubishi MJE16V and MJ-E16VX, which only produce 41 db in high mode, 39 db in auto mode and 37 db in auto mode low settings.
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