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.
 

Single room

If you only need to humidify one room, look for models that can handle about 500 square feet or less, depending on your needs.

Whole home

For a whole home model, you can find units that will humidify spaces up to 2400 square feet or more.

Portable

If you love to travel and want to bring a humidifier with you when you’re on the go, look for small, portable models. These allow you to humidify a small space like a bedroom or office and some can be powered by USB.

Tank capacity

The tank capacity on a humidifier will determine how often you need to refill it, so look for a unit with a large water tank if you don’t want to refill it frequently.

Adjustable humidistat

If you want to set a precise level of humidity, look for models with an adjustable humidistat.

Removable water tank

Make sure you choose a humidifier with the right fill method for you. In smaller models, a removable tank may be a convenient option.

Water refill indicator

Get convenient notifications when it’s time to refill the water.

Top fill

Removable tops make these humidifiers quick and easy to refill.