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How humidifier technologies differ.
HCM-750 / HEV355
Filtered Cool Moisture Humidifiers. (Evapourative)
Cool, filtered invisible moisture.
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A fan blows moisture off a saturated wicking filter helping it evapourate into the air more quickly. |
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The moisture output is invisible, since the water is evapourating off the filter. |
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It is not possible to over-humidify because the air will not absorb any more moisture than it can hold. |
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This type of humidifier requires a replaceable wicking filter to operate. The filter also captures minerals from the water, helping to prevent white dust in hard water areas. |
Filter-Free Cool Mist Humidifiers.
Cool, filter-free visible mist.
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A nebulizer vibrates at ultrasonic frequency, breaking water droplets into fine visible mist that you can see. |
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This type of humidifier is filter free, but some will accept an optional demineralization cartridge that helps to remove minerals from the water, reducing white dust in hard water areas. |
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Ultrasonic humidifiers are generally very quiet but you may hear the sound of water dripping as it falls into the reservoir. |
HUL520B / HUT-300B
HWM-340B / HWM705B
Warm Mist Humidifiers.
Warm, filter-free visible mist.
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Water is boiled in a heating chamber and is then released into the air as warm, visible mist. |
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This type of humidifier produces 99% bacteria free mist, since the water is boiled first. |
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Some warm mist humidifiers come with a medicine cup so liquid inhalants can be used for added relief. |
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You may notice the temperature in the room rises slightly since the mist is warm. |