Home Depot stocks almost 200 different models of humidifier, all of which can be purchased online. The humidifying methods offered include cool mist, evaporate, ultrasonic and warm mist. The models fit room sizes of less than 400 square feet, between 400 and 1000 square feet and over 1000 square feet.
Home Depot offers humidifiers by major manufacturers, such as Honeywell, Vicks, Crane, Black & Decker, and Essex Air Products. The appliances have a variety of features, such as automatic moisture control, automatic shut off, tank empty indicators, water lever indicators and adjustable humidistat. Fourteen of the models include no additional features. Twenty-five of the models can humidify a whole house, while only one model, the HoMedics Personal Cool Mist Ultrasonic humidifier, is Energy Star Certified. The company sells humidifiers with tank sizes that range from .5 gallons to over 5 gallons, with the most popular gallon size being between 1 and 2 gallons. Five models come with a remote control including the Luma Comfort 1.19 gal. Ultrasonic Cool Mist Vase Humidifier in white or black, and the Air Innovations 1.7 gal. Clean Mist Smart Humidifier in black. The most expensive option is the $336 Honeywell HEPA Air Purifier. Home Depot ships all the models over $45 for free.