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Honeywell HCM-350 Cool Mist Humidifier Review


Honeywell HCM-350 is a portable Germ-Free Cool Mist Humidifier that disperses 2 gallons (7.6 liters) of mist daily and covers up to 360 square feet (33 square meters).


  • Stylish design
  • The water reservoir has a handle, and it is easy to refill
  • UV technology kills up to 99.9% of bacteria
  • Dishwasher safe


  • No auto-shutoff
  • No water refill indicator

Honeywell HCM-350 Design and size

Honeywell HCM-350 has a stylish design. The water tank has a smooth bottom design, and the handle is one of the most comfortable and well-balanced on the market.

That makes the Honeywell HCM-350 very easy to fill. Also, the lid is easy to get off and on. As a result, filling this humidifier is a pleasure.

Honeywell HCM-350 is 12 inches high, 18 inches wide, and 10 inches long in-depth.

Quite a considerable size, but the weight is only 9.9 pounds. You can easily place it wherever you want – table, nightstand, etc.

Honeywell HCM-350 Cool Mist Humidifier Review

Honeywell HCM-350 Features

  • The Honeywell HCM-350 Cool Mist Humidifier has an evaporative technology. The cool mist is regulated automatically. The mist output adjusts to the perfect amount for your indoor air temperature.
  • The humidifier has 3 speeds. Great if you want to choose quieter and lower mist output or, on the contrary.
  • UV technology kills and destroys up to 99.9% of harmful bacteria.
  • You can wash the water tank in the dishwasher. Yes, it is dishwasher-safe.
  • The low-speed humidifier runs for up to 24 hours.
Prices pulled from the Amazon Product Advertising API on:

Honeywell HCM-350 Noise level

At low speed, the humidifier is whisper quiet.

On medium, it provides a peaceful, gentle white noise.

At high speed, it sounds like a fan.

The Honeywell HCM-350 is ideal for people who like light background noise while resting or sleeping.

Honeywell HCM-350 Coverage

Honeywell HCM-350 can output 2 gallons of mist daily, but the tank capacity is only 1.1 gallons. So on the highest setting, you can run it for up to 12-14 hours. On a lower setting and mist output of 0.33 pints/hr, you can run it up to 24 hours with one fill.

Crane Drop EE5301 has similar specs but is cheaper and consumes less power. GENIANI Top Fill cool mist humidifier also has a 1-gallon water tank; it can work up to 18hrs with one fill, but it consumes only 20 watts, so that it will be very energy efficient.

Another model worth looking at is Sunluna SL-AH001; also check Pure Enrichment models HUME and HUME max; they have more stylish designs, super low energy consumption, and reasonable pricing.

Honeywell HCM-350 Maintenance and upkeep

The maintenance is easy. If you use the humidifier daily, you must refill it once or more.

All the rest maintenance depends on how clean water you use. But optimally clean the humidifier every 3-4 weeks. Then, clean the water tank and soak the filter in vinegar/water. It can get crusty.

Honeywell HCM-350 Summary

Honeywell HCM-350 is quiet, easy to set up and use, and easy to maintain. A leading consumer reporting magazine recently recommended the Honeywell HCM-350.

Read other Honeywell humidifier reviews:

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