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  • Automatic Moisture Balance System naturally adjusts output for maximum comfort
  • Clear tank for at-a-glance monitoring of water levels
  • Up to 2 Gallon output per day, dependent on room temperature and humidity
  • Speeds - Two moisture output settings - high/low
  • Evaporative humidification technology
  • Designed for small-medium rooms
  • Runs up to 12 hours per filling on low setting
  • .8 gallon tank capacity
  • Three year limited warranty
Breathe easy with the Honeywell Cool Moisture Humidifier, a premium solution for combating dry air discomfort. This innovative humidifier boasts an automatic moisture balance system that naturally adjusts mist output for optimal comfort, eliminating the need for constant manual adjustments. Additionally, high and low moisture settings provide further customization to match your preferences. Featuring evaporative humidification technology and a 12-hour continuous runtime, this Honeywell Cool Moisture Humidifier is ideal for adding soothing moisture to small or large rooms.
I hear the fan turning, but I don't see any mist. Is my humidifier operating properly?
Dry air is pulled through the Cool Moisture system and a fan disperses invisible, moisture balanced air. There is no "mist" emitted. When operating normally, you will feel only cool air coming from the unit. Monitor the water level in your tank/base. If you notice a decrease in the water tank over 24 hours then the unit is operating normally.
My unit has been running for several hours. I hear the fan spinning, but I do not notice the water level in the tank decreasing.
First, check the moisture pad to be sure it is wet. If the pad appears dry, remove it from the base and gently rinse under cool water. Reposition wet filter in the base. You may also want to check the current moisture level in your home. If the humidity level is over 60%, the unit will not put out much moisture as your air is already saturated.
Product Details
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Honeywell HCM-890B Cool Moisture Humidifier, Black Video

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HCM-890B customer reviews

Overall Rating

10 Reviews
9 customers recommend this product
Honeywell HCM-890B Cool Moisture Humidifier, Black Reviews
Randy Long
March 7, 2018
Verified Purchase


Tom Rupli
January 26, 2017
Verified Purchase
Works well

I am using this Honeywell Cool Moisture Humidifier in our work office. It supplies just enough moisture to make the area comfortable. I would recommend this humidifier.

Lacy Leno
April 4, 2016
Verified Purchase
great product

I love this humidifier. It looks and works great.

Larry Covey
December 11, 2015
Verified Purchase
Great unit

Nice humidifier. Simple to work. Durable. Filters are easy to find. This is our second one for another room. Great product

May 11, 2015
Verified Purchase

Compact easy to use and functional.

Gary Pack
April 20, 2013
Verified Purchase

Im very impressed with this model. Im using it at work. Im also thinking of buying another for home.

Christine Gietschier
February 19, 2013
Verified Purchase
Its a spare

Went through 3 units before finding one that suited my needs. The fan is noisy, but I sleep with white noise, so this works for me. I wish it had a 3rd fan speed and larger tank capacity.

David Beal
January 17, 2013
Verified Purchase


January 27, 2012
Verified Purchase


Richard Shimp
January 26, 2012
Verified Purchase
Good, but fan is noisy.

Works well. Unit is more noisy then expected.

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