Honeywell HCM 350 Germ Free Cool Mist Humidifier Review

In your search for the best cool mist humidifier, you will definitely come across the Honeywell HCM 350 Germ Free Cool Mist Humidifier.

This article may contain affiliate links. Also, as an Amazon Associate I earn from qualifying purchases.

You can order one from with confidence. The Honeywell HCM-350 made by the American Conglomerate Honeywell.

This entity has been in the forefront for many years making high quality consumer products. Thus, if you care about brand names when buying a cool mist or warm mist humidifier, this is among the best of them all.

Because of the love that we have for our homes, we believe that products that enhance our comfort should look good. They should enhance our interior décor.

The Honeywell HCM 350 cool mist humidifier looks quite outstanding. It is something you would place on the table and not feel ashamed to usher in your guests to it.

In the title, you might have noticed that we said this us a germ-free humidifier. Well, what exactly does that mean? We have been made to believe that only warm mist humidifiers can kill germs.

However, the Honeywell cool mist humidifier does and we will discuss the technology behind later in the upcoming sections.

Honeywell HCM 350 Features & Technical Details

Features are everything in a humidifier. They determine how long it’s gonna be until you have to refill the tank. The more features that a humidifier has the better.

However, they should not be too many as to make it too complex for a user. Thankfully, the Honeywell HCM 350 is efficient, effective and straightforward.

Let us see some of its most notable features:

Design and build quality of the Honeywell HCM350W

The right word to use about the design of this cool mist evaporative humidifier is to convenient. Every features included in its build is for the benefit of the use.

The first notable thing about it is the recessed tank handle, which makes carrying this appliance from one place to another quite bliss. At the same time, the weight is minimal well under 10 lbs.

Filling and emptying the Honeywell HCM-350 germ-free cool mist humidifier is so easy since the mouth is quite wide. It is also easy to clean the tank, as we have mentioned elsewhere.

1-gallon humidifier tank

With this water tank, you are assured that the humidifier is going to run for 24 hours before you have to refill it. From the capacity of the tank, you can tell that this humidifier would be perfect for small rooms. Thus, you should use it in the bedroom, baby’s room or any other medium-sized room that you have at home.

When you need to refill the tank, it is easy work. The tank has a large opening. However, the tank is small enough by size to fit well under the kitchen tap, so filling her up should be a no-brainer.

We could not get the exact measurement of the tank opening. But to give you an idea, if you have a slim wrist, it can fit right into the tank when you are cleaning it. Yeah, that is how big the opening is.

Wicking filter

The Honeywell HCM350w germ free cool mist humidifier has a wicking filter. When the wick absorbs water, the evaporative technology then blows off the moisture from the filter.

This moisture evaporates in the air as mist, in the process keeping your indoor air at the required humidity level, which is between 40 and 60 percent.

This germ free humidifier uses evaporative technology, which means that it will never dispense more mist than you need in your home.

UV light technology for killing germs

With the ultra-violet light technology, the Honeywell HCM350W germ free cool mist humidifier white is able to kill 99.9 percent of the germs in the water. This includes fungi, bacteria, viruses and even mold. Thus, you can be sure that the cool mist being dispensed into your indoor air is sanitized and germ-free.

This technology works in a very simple way. First, the water from your tap will enter into the UV channel, which is just a path designed to expose water to UV treatment.

The UV light then kills all mold, fungi, viruses and bacteria. This happens fast, in a matter of seconds, so it is not as if the water lingers in the UV path too long.

The sterilized water then gets into the base, and it is from there that the wicking filter absorbs it. Dry air from the room is pulled into the filter, where it absorbs the clean water. This moisturized air will then be dispensed into the room in the form of mist.

Self-regulating feature for humidity control

It is clear that the Honeywell HCM 350 germ free cool mist humidifier lacks a humidistat. How then does it prevent over-humidification?

It does this by self-regulation. By self-regulate, we mean that when optimum humidity has been achieved, this appliance slows down or stops cranking up the mist.

When the humidity takes a dip, it starts pumping out the mist again. As long as there is water in the tank, you never need worry about over or under-humidity in the house.

Ultra-quiet humidifier fan

In the dead if night when everything else is quiet, you will hear the white noise that the HCM350W humidifier produces. However, please note that this is white noise, which will actually help you fall asleep.

Therefore, it is possible to use this humidifier in your baby’s room without worrying that the noise will wake them up. It won’t!

Speed settings

Sometimes, the air in your room could be too dry and thus you would be looking for an opportunity to crank up the mist production.

In such a case, you can set the mist output speed at high. However, you should note that at high speed, the noise is louder. Therefore, most people prefer to pump mist at high speed setting in the daytime and then slow things a bit at night, which is quite a sound plan.

You may even go for moderate speed, where the noise is not too bad.

Humidifier HCM 350 Germ free cool mist humidifier pros

  • Quieter than most other models of humidifiers in the same price range by up to 25%
  • Different speed modes means you can meet your immediate humidity needs easily
  • Ultraviolet light technology kills bacteria, viruses and allergens like mold
  • Easy to clean the tank, easy to fill up with water
  • Looks quite stylish for any room
  • The germ –free air can help with your cough, stuffy nose, dry skin and sore throat
  • It is so easy to use, no learning curve
  • The Honeywell 350 humidifier has a self-regulation feature to keep humidity at the required level always
  • It is cool mist so you do not worry about scalding the baby

Honeywell HCM 350 Germ free cool mist humidifier cons

  • Still, a humidistat would feel so much better, it is what we have been used to
  • Replacement filters can cost too much sometimes, shop around some
  • The lid is a bit hard to clean

Who should buy the Honeywell HCM 350 Germ free cool mist humidifier?

If you are looking for a small humidifier for a medium-sized room, get the HCM 350. It is designed with important features such as low noise levels, good mist output and safety.

Since it does not boil water, you can even keep it in baby’s room without worrying about their safety. Honeywell humidifiers are known for their durability. Therefore, if you are looking for one that can last years on end with just filter replacements, get the Honeywell HCM 350.

Final verdict

The Humidifier HCM 350 Germ free cool mist humidifier is a good investment if you live in a place with dry air during the cold seasons.

The outstanding feature is the patented UV germ killing technology so you can be sure you are breathing in clean and healthy air all the time. Apart from the cost of replacement filters, for years, you will never need to buy another humidifier.