Types of humidifiers

Evaporative Humidifiers In evaporative humidifiers mist is produced by blowing water through a wet pad or wick filter with the use of a fan. The mineral dust and bacteria get trapped on the filter before the water evaporates into the air.

+Wick filter ensures a pure and clean mineral-free moisture output. +Fans can be powerful enough to cover large areas with a single humidifier. +Very low power consumption.

-Fans make more noise than other types of humidifiers (noise level depends on fan speed). -Bacteria and mold can grow on wick filter (may be reduced by using a bacteria treatment water additive). -Most wick filters need to be replaced approximately every 2 months

Impeller Humidifiers In impeller humidifiers there is a fan which blow water through a diffuser and as a result it produces fine droplets. In contrast to evaporative humidifiers there is no filter.

+ Quiet operation. +No filters to replace. + Low power consumption. +These humidifiers are cheaper than evaporative humidifiers.

-Bacteria is spread in the air along with the mist. -White dust as a result of scattering the minerals present in the water (to prevent this, one can use distilled or de-mineralized water instead of regular water to fill them up) - Limited to small rooms only.

Ultrasonic Humidifiers Ultrasonic humidifiers use high-frequency vibrations to dissipate water into the air.

+Ultra quiet, near silent operation. +Low power consumption (when using cool mist). +No wick filters to replace.

- White dust as a result of scattering the minerals present in the water (to prevent this, one can use distilled or de-mineralized water instead of regular water to fill them up) - Most units are limited to small rooms only.

Warm Mist Humidifiers These humidifiers heat the water and expel steam into the room.

+ Quiet operation. + Pure, clean mineral-free moisture output. + No filters to replace.

- Higher power consumption (heating element uses more electricity than other humidifiers). - Limited to small rooms only.