Honeywell Ultrasonic Cool Mist Humidifier - Black, HUL535B

  • Honeywell Ultrasonic Cool Mist Humidifier - Black, HUL535B
  • HUL535B
  • HUL535B
Quiet Operation ideal for medium sized rooms
Availability: In Stock
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Regular: $71.95
Price: $52.95
You Save: $19.00 (26% Off)
Color Options: Black
  • Ultrasonic humidification technology
  • Provides soothing, visible cool mist
  • Ultra-quiet operation
  • No filters required
  • Directional mist outlet
  • Large tank opening for easy filling & cleaning
  • Essential oil feature
  • Auto shut off when empty

Filter Free Cool Mist Humidifier

The Honeywell Ultrasonic Cool Mist Humidifier is an excellent addition for those searching to establish an improved breathing environment. Providing the height of convenience and efficiency, this humidifier by Honeywell features an ultra-quiet operation and an auto shut-off function when the tank is empty. Accessibility has also been addressed with the utilization of a large tank opening that allows for easy filling and cleaning. The Honeywell Ultrasonic Cool Mist Humidifier discharges visible cool moisture in multiple output settings. An essential oil feature has been added for increased comfort and customization. This humidifier is an ideal fit for medium sized rooms and is capable of running for 24 uninterrupted hours per filling.

Protec Antimicrobial Cleaning Cartridge

The Honeywell Ultrasonic Cool Mist Humidifier can also use Protec Humidifier Cleaning Balls. Protec Antimicrobial Cleaning Cartridges feature a patented antimicrobial, Aquastat that continuously works to hinder the growth of bacteria and mold. They're also capable of preventing the buildup of slime in the water and humidifier surfaces. Protec Antimicrobial Cleaning Cartridges work in all humidifiers and are safe/non-toxic. Aquastat contains no harsh chemicals or harsh acids making the cleaning action just as gentle as water on your humidifier surfaces and components.

Product Details
  • Protec Antimicrobial Cleaning Cartridge
    • Replace 1 x every 30 days 
  • Moisture Type: Ultrasonic Cool Mist
  • Room Size: Medium
  • Run Time: 24 Hours on Low Setting
  • Tank Capacity: 1 Gallon 
  • Product Dimensions (LxWxH): 8.57 x 8.15 x 13.03 in.
  • Product Weight: 3.04 lbs
  • Warranty: 2 Years
Product Specs
Q: How do I clean my Honeywell Ultrasonic Cool Moisture Humidifier?
A: For ultrasonic humidifiers, periodic cleaning of the nebulizer will help it perform at its best. The nebulizer, which is a round disc found in the base of the unit, vibrates at ultrasonic speed to create mist. Over time, minerals from your water may collect on the nebulizer causing it to slow to a pace that is not enough to create mist.

Turn off and unplug the humidifier. Empty water from the tank and base of the unit. Fill the base with undiluted white vinegar (just enough to cover the nebulizer) and let it soak for at least 20 minutes. If you see a strong mineral build up, you may want to let it soak longer. Do not run the humidifier with vinegar in it. Gently wipe nebulizer and reservoir area with a soft cloth to remove the mineral deposits. Empty the vinegar and rinse the base with water until the smell of vinegar is gone.

Honeywell Ultrasonic Cool Mist Humidifier - Black, HUL535B Video
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Customer Reviews


Average score based on 3 reviews

Rating: 4.3/5Rating: 4.3/5Rating: 4.3/5Rating: 4.3/5Rating: 4.3/5
Write A Customer Review Review
Honeywell Ultrasonic Cool Mist Humidifier - Black, HUL535B Reviews

Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5Rating: 5/5 - Reviewed: 03/01/2021 by Morris McDonald

It's Mistily Cool

This is as advertised and adequate for my bedroom.

Rating: 4/5Rating: 4/5Rating: 4/5Rating: 4/5Rating: 4/5 - Reviewed: 02/02/2021 by Gabriel Voiles

Simple product, works so far

Well-designed, I suppose. But more just simply built. Few moving parts means less to break.

Rating: 4/5Rating: 4/5Rating: 4/5Rating: 4/5Rating: 4/5 - Reviewed: 12/18/2020 by Gabriel Voiles

Works great so far

Works great so far. Don't find it to be loud at all, as some have complained about.