Humidifier questions, answered
Short answers, with links to the full guides.
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Types and water
The EPA says cool mist units use ultrasonic vibrations or a spinning disk, and warm mist units heat water to steam, then cool it. Cool mist, warm mist, ultrasonic, and evaporative humidifiers
The EPA says ultrasonic and impeller units can disperse minerals from tap water, and suggests low mineral water such as distilled water. White dust, minerals, and what water to use
Cleaning and humidity
The EPA says to empty, dry, and refill portable units daily, and clean them every third day. How to clean a humidifier, per the EPA
The EPA says not to humidify above 50 percent relative humidity. Indoor humidity levels, from the EPA
Prices and picks
No. When a retailer link is present, see the current price at the retailer.
No. We do not rank humidifiers or name picks.
About us
No. We publish guides. Purchases are with the retailer.
No. We are not a health site. If you think a humidifier is affecting your breathing, stop using it and ask a doctor, as the EPA advises.
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Start with the types
Cool mist, warm mist, and evaporative, in EPA terms.
