Honeywell HUL535B Cool Mist Humidifier Black Filter Free Review

Eileen Martin
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We had our experts take a look at the Honeywell HUL535B Cool Mist Humidifier Black Filter Free to provide you with the inside scoop on its qualities.

We scrutinize all products before we share our detailed thoughts on it with you.

Our rating: 8 / 10

Cost: $$$

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  • No filter to replace
  • Auto shut-off feature
  • Low price


  • Only medium-sized room
  • Slow mist production
  • Bad customer service

This Honeywell Cool Mist Humidifier delivers a fine, visible cool mist to make you and your home more comfortable. It is designed for a medium sized room with ultra-quiet operation, can run up to 24 hours before it has to be refilled with water, and has a directionally-pointed mist outlet for better coverage.

The grey plastic base allows you to safely place it on an uneven surface — perfect for tuck under furniture or other hard to reach areas. The Honeywell Humidifier has a self-cleaning function that keeps it from dripping water.

It does come with a permanent filter that you have to clean every few weeks to maintain the clean and fresh feeling of having moist air circulating in the space.

I like this for a nightlight in the nursery, or for a bedroom that has to be kept a little cool, but not too cold.

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Not what you’re looking for? Read our roundup review: 10 Best Filterless Humidifiers of 2022 – Healthy & Cost Efficient