Question: What is The Difference Between Cool Mist & Warm Mist Humidifiers?
What is the difference in cool and warm mist humidifiers and how do I know if I need one?
Answer: There are only a few differences between warm and cool mist humidifiers and the type that is better for you depends on which type is recommended by your physician, or which type helps you breathe better.
From my own experience I've found that the cool mist usually makes breathing easier for asthma and allergies. If you find it hard to breathe in a sauna, a cool mist would probably be better for you. On the other hand, if a sauna makes it easier for you to breathe, a warm mist would be a better choice.
Warm Mist Humidifiers
These humidifiers actually boil the water which causes a distilled steam to be expelled into the room. This steam is like a gentle spray of warm water, as opposed to a vapor, and this is concentrated in the area closest to the humidifier. This warm mist is easier to breathe in a cool room. These units are often also used for steaming medications.
They are a little quieter than cool mist humidifiers, and are sold in small portable units. They require more frequent cleaning due to the warm water which encourages bacteria growth in the unit.
Cool Mist Humidifiers
Cool mist models are slightly noisier, though some models have a 'silent' feature for operating in bedrooms. They pass the water over a wick and expel a vapor, that cools down the room temperature and makes it easier to breathe. They vary in size, from units that can be circulated through the house's heating system, floor console units, or room size models.
All humidifiers require regular cleaning to reduce the risk of bacteria, and some models have filters which require changing to maintain performance levels.
How Can I Tell If I Need One?
If you suffer from chapped lips, dry skin, sinus problems or a dry cough, you would probably benefit from the use of a humidifier. A house that is too dry will also cause static electricity to form, and also wooden furniture and musical instruments to crack and mar their finish.
How Do I Know How Much Humidity Is Right?
The best way to know is with a hygrometer, which measures the humidity levels in your home. A healthy humidity level is between 35 and 45 percent. Musical instruments require around 40 percent humidity to be maintained in the room, to reduce the risk of crazing or cracking of the finish.
Over 50 percent humidity can cause bacteria, dust mites and mold spores to grow. If you don't have a hygrometer, a sign that there is too much humidity in your home, would be the evidence of mold, or condensation and steam dripping on the inside of your windows.

