Holmes Evaporative Humidifier

One of the cool mist humidifiers that Holmes produces is an evaporative humidifier.  This type of humidifier is marketed and sold as their Cool Mist Humidifier. 

An evaporative humidifier uses a fan to blow water through a wet pad or through a wick filter.  The wick filter traps mineral dust and bacteria before the water evaporates into the air.  This then allows a cool and clean mist to evaporate.  Because evaporation is a passive action, this limits the user’s ability to control the amount of humidity released as well as the circulation of that humidity throughout the room.  A room with low humidity will have a higher evaporation rate than a room with high humidity will have.

Evaporative humidifiers can cost more to buy and to maintain due to needing to replace the filter it uses.  Holmes recommends that you replace the filter every 4-8 weeks or whenever the filter turns brown.  Although it can cost more, most people and experts say that the benefits outweigh the inconvenience and cost of replacing the filter.  Also, the wicks can become moldy if they are not dried out completely in between uses.

Evaporative humidifiers can be attached to the heating or cooling system of a house or building.  This is so that as the heating or cooling system works it runs through the humidifier which helps to moisturize the air before blowing it into the house or building.