How to choose a humidifier

Warm mist humidifiers

Warm mist humidifiers use an internal heating element, which boils water prior to releasing it, adding warmth to a room. The boiling process kills waterborne bacteria and mould. These humidifiers don’t require filters and work well with medicated liquids for helping to treat coughs and sinus problems.
 

Cool mist humidifiers

Cool mist humidifiers disperse a comfortable stream of room-temperature mist. Some models come equipped with a permanent, washable filter.
 

Ultrasonic humidifiers

Ultrasonic humidifiers use high-frequency sound vibrations to produce an extra fine water mist and are typically used for smaller areas. These humidifiers are available in warm or cool mist, or you can choose a unit that gives you both options. If you do choose one that uses a filter, make sure it can come apart easily for maintenance.
 

Evaporative humidifiers

Evaporative humidifiers have a wick that absorbs the water and a fan that blows that water out into the air.

During this process, the water traps air-borne dust particles, cleaning the air while adding moisture.

If you’re looking for an easy-to-use evaporative humidifier, consider a furnace-mount model.

Vaporizers

Vaporizers work by heating water until it turns into hot steam and are often used to help fight off cold or flu symptoms. You can add medicated liquids to some models. These units work best in small rooms and do not require a filter.