Best Diffuser Humidifiers of 2020 – Buyer’s Guide

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When you have so many options to choose from, regardless of the product you are buying, cherry picking the best one can be a difficult task. This also applies to humidifiers. Humidifiers come in all shapes and sizes, and they use different types of technologies to get the job done.

To help you pick the best unit, we’ve reviewed some of the best diffuser humidifiers in the following. We will take a look into what features to look for and what makes a certain product the best!

Comparison of the Best Diffuser Humidifiers

  • Best overall
  • Does not require any filters
  • The device has a water capacity of 100ml.
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  • Runner up on our list of best diffuser humidifier
  • It has a large water capacity; approximately 1500ml
  • The device can cover an area of 350 square feet in terms of humidity and 450 square feet in terms of aromatherapy.
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  • Best for the money
  • It features different LED lights that help create a relaxing atmosphere.
  • It has a water capacity of 100ml, making it ideal for small to medium rooms
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  • It does not make much noise
  • The device has 550ml water capacity.
  • It has various time settings that you can set to your preference
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  • It has adjustable time settings.
  • It can cover an area of 80-100 square feet.
  • The diffuser humidifier has a 300ml water capacity.
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What is Diffuser Humidifier and What Are They Used For?

Usually, diffusers and humidifiers are used as two separate devices. Diffusers are used, quite literally, to diffuse substances in the air. Most commonly, they are used to diffuse essential oils. Essential oils are pleasant smelling, and each has a different property, so they benefit you in some way or another.

Humidifiers, on the other hand, add moisture content to the air. This helps to improve dry conditions. They can aid in treating conditions like dry skin, irritation and even some symptoms caused by the common cold. Basically, it helps with problems that occur in dry conditions.

InnoGear Diffuser Humidifier

However, what if you want to take advantage of both? Buying both a diffuser and humidifier hardly seem like a feasible solution. In this case, we have something that we refer to as a diffuser humidifier. These are a two-in-one solution that not only humidify the air but also help in diffusing essential oils in the atmosphere.

There are different types of diffuser humidifiers. In some, you can add the essential oils directly, and in others, you will find a different compartment for that purpose. Regardless, the end result will provide you with pleasant smelling air with good moisture content.

Characteristics of our Favourite Models

Each diffuser humidifier is made differently. However, these are some characteristics that you will find in every great diffuser humidifier.

Water Capacity

High water capacity is a good feature to look out for when buying a diffuser humidifier. The larger the capacity of the device, the more water, and oil it can accommodate. This means that you will have to refill the device less often. Moreover, you will be free from the task of constantly checking up on the device.

Noise output

Another important feature to consider is the noise output. How much noise does your device make? Is it making too much noise? Does it distract you from concentrating or relaxing? If yes, then that’s no good. Ideally, a device with little or no output is preferred as it helps you relax completely.

Ease of Use

It is important that the device you pick is easy to use. This can involve many different functions. For example, does the device have adjustable settings? Does it have a humidity level indicator? Does it feature an automatic turn off the system? Such functions make operating the device much easier and therefore, are preferred in any device.

Area Covered

When we talk about diffuser humidifiers, we cannot leave out the area that they cover. This is one main feature that you should look out for. The more area a diffuser humidifier covers, the more suitable it will be.

Quick Take: Best Diffuser Humidifiers

These are our recommendations for the best diffuser humidifiers:

  1. URPOWER Cool Mist Humidifier
  2. Exqline Diffuser Humidifier
  3. InnoGear Diffuser Humidifier

Review of the Best Diffuser Humidifiers

Now that we have gotten everything else out of the way, let’s get down to business. In this section, we will review five of the best diffuser humidifiers of 2019. We shall look into what features they have and what are the pros and cons of the device in discussion.

URPOWER Humidifiers, Updated 4L Cool Mist Humidifier with Sleep Mode, Whisper-Quiet Operation Ultrasonic Humidifier -Waterless Auto Shut-Off with 3 Mist Level Humidifiers for Bedroom Babyroom Office


  • Functions without making noise.
  • It can cover an area of 215 square feet.
  • Two mist settings to choose from allow you to set the desired humidity level.
  • It is designed in a visually pleasing manner, making it easy to place almost anywhere.


  • The device is prone to spillage when the water tank is at full capacity.

Our Review

The URPOWER Cool Mist Humidifier is proof that great things come in small packages. It has a sleek design and is visually appealing. The device is designed in such a way that it will fit right into the room décor without a problem. It is equipped with 7 LED lights, each of a different color. The brightness of the lights is adjustable and also has a night light option.

The water capacity of this diffuser humidifier is 100ml. It holds water that is blended with essential oil. Since the device can hold up to 100ml of water, it means that you do not have to worry about constantly refilling it. The device has two mist settings; one is intermittent in which the mist is circulated through the air sporadically.

When the device is filled up to 100ml, and the device is set to this mode, it will function for 6 hours. The other is the continuous setting in which the mist is circulated constantly, and in this setting, the device will function for 3 hours.

Moreover, the device works silently so that it does not distract or disturb you. It also does not require any type of filter. It also has an auto turn off feature which enables the device to shut down after all the water has been used. Furthermore, the device only needs to be cleaned once a week and does not require much attention.

Bottom Line

If you're looking for something small yet efficient, then the URPOWER diffuser humidifier is the one for you. Not only does it come with a plethora of features, but it is also aesthetically pleasing as well.

1500ml Aroma Essential Oil Diffuser Large - Exqline Diffuser for Essential Oils Large Room Large Aromatherapy Diffuser Large Room Diffuser Humidifier Unique Diffusers for Essential Oils(White)


  • It has a large water capacity.
  • Comes with adjustable humidity settings.
  • The device makes next to noise when it functions.


  • The device does not have an automatic timer and shut off function.

Our Review

The Exqline Diffuser Humidifier has a variety of features which make it a favorite among users. The first of all is its adjustable vapor setting. The device has a 270-degree knob that can be rotated to set the humidity level. This is an easy way to select exactly how much vapor content you want in the air.

The second is the whisper quite function. The device produces next to no noise when it functions. This is a major plus point as the device can be used anywhere around the house. Its whisper quiet function will prevent it from disturbing or distracting you.

Moreover, the device has a large water capacity. It can hold 1500ml in its reservoir which roughly measures up to half a gallon. This is the largest capacity among top diffuser humidifiers. When set on the appropriate setting, it can work for up to 20 hours continuously. When it comes to area coverage, this diffuser humidifier can cover up to 325 square feet of area in terms of humidity. Meanwhile, in terms of aromatherapy, it can cover a bit more than that; approximately up to 450 square feet.

Though the device does not have a very sleek or modern design, it makes up for that with its light settings. The device is equipped with 7 different colored LED lights. These lights can be adjusted to your preference. You can also select the dimness or brightness of the device and match it to the setting of your room or office.

Bottom Line

This device is no doubt a great choice for a diffuser humidifier given that it lacks a timer and shut off function. However, this doesn't affect the performance of the device in any way, and despite the absence of this feature, the diffuser humidifier works like a charm!

Best for the Money:
InnoGear Diffuser Humidifier

InnoGear Essential Oil Diffuser, Upgraded Diffusers for Essential Oils Aromatherapy Diffuser Cool Mist Humidifier with 7 Colors Lights 2 Mist Mode Waterless Auto off for Home Office Room, Basic White


  • The device is equipped with adjustable settings.
  • It blends in with the room décor and is the perfect size.
  • The device does not make a lot of noise when functioning.
  • It has a considerably good water capacity and is easy to use and maintain.


  • There may be some leakage when the device is filled to the maximum limit.

Our Review

This small yet effective device is amongst the best diffuser humidifiers, and there is a good reason for that too. With a water capacity of 100ml, this device meets the standards of a medium-large coverage diffuser humidifier. The device has two settings for vapor discharge.

When the device is set on the continuous, it will function for 3 hours. On the other hand, when it is set on the intermittent setting, it works with an interval of 30 seconds. When it is set on that setting, the device will work continuously for 6 hours.

The device has an automatic timer as well. It will shut down the device when all the water from the device has been evaporated. Though the device does produce some noise, it is mostly white noise. The sound that the device produces is around 30-35 dB. This type of noise does not disturb or cause a distraction at all. You can also play a little with the display settings as the device is equipped with 7 colored LED lights.

This diffuser can cover most small to medium rooms. Furthermore, it can be utilized in many settings. These settings can include offices, nurseries, bedrooms and even bathrooms.

Bottom Line

The InnoGear diffuser humidifier is a great option if you’re looking for an affordable diffuser humidifier. It is not bulky as well. It can be easily be placed anywhere in the room, and it will look the part!

PuraSense Ultrasonic Aromatherapy Essential Oil Diffuser, 550ml Cool Mist Humidifier with Color LED Lights Changing and Waterless Auto Shut-off for Office Home Bedroom Living Room Study Yoga Spa


  • The LED light function adds to the aesthetics of the device.
  • It does not need to be looked after constantly as it has a good water capacity.
  • The design of the device is very nice, making it a good addition for bedrooms.


  • The device does not have an intermittent mist function.

Our Review

This diffuser humidifier has a very different and contemporary design. At first glance, it will look nothing like a diffuser humidifier at all. In fact, the chic and classy design helps it to blend right into the room as a decoration piece. The exterior of this device has a wood grain finish which only adds to its aesthetic value.

This little device has a surprisingly large water capacity of 550ml which allows it to function for a total of 10 hours when filled up to the maximum capacity. The device also has four different time settings as well. The settings range from 1 hour, 3 hours, 6 hours and continuous.

The continuous setting will allow the device to run until the water runs out. However, when the water does run out, the device will activate the auto shut off feature. This feature automatically turns off the device exactly 5 seconds after all the water has been evaporated, making sure no harm comes to it.

This device also works very quietly like all the devices mentioned before. Of course, this can be counted as a very big advantage as the quietness of the device can help elevate the relaxing experience.

Not only that but you can also engage in various different activities such as watching TV or reading without being disturbed. The device also has the option of changing LED lights. There are 7 colors in total that can be set to your preferred taste. You can also choose to fix a certain color or let the colors change in a set cycle.

Bottom Line

Overall, this device is a good pick. It has all the options that a good diffuser humidifier should have and to top it all of; it is very fancy looking.

VicTsing 300 Milliliter Wood Grain Essential Oil Diffuser, Oil Diffuser with 7 Color Lights and 4 Timer, Auto Shut-off for Bedroom Home - Deep Brown


  • It is easy to use.
  • The design of the device is visually appealing.
  • The device has an automatic shutdown feature, adding to its security.
  • The device has a large water capacity. When full, it can function for up to 10 hours.


  • It can easily spill water even if it is bumped a little.
  • The device is somewhat larger than its counterparts.

Our Review

With a water capacity of 300ml, this diffuser humidifier is quite popular for holding out longer than its counterparts. It can be operated very easily as all the control buttons are right in the front of the device. The device has four time settings; it has 1 hour, 3 hours and six-hour intervals that can be set. The fourth setting is the continuous setting which enables the device to work until there is no water left.

The device also has two settings for misting; a standard setting and a strong one. The standard setting gives out a steady stream of mist in the air while the strong setting produces mist with much more vigor. The unit also has an automatic shutdown feature which is activated when the device is left with no water.

Moreover, it can cover an area of 80-100 square feet on average. The design of the device is very interesting. It has quite a modern look to it and can be used as a decorative piece. Like many of its counterparts, this does not produce much noise when it is working. In fact, you can hardly notice the sound that it produces.

Bottom Line

This chic piece is an all-rounder. It incorporates many great features like adjustable settings and good water capacity. It also produces minimum noise which is a welcome feature in any device.

Aspects to Consider Before Buying

With any device, there are some factors you definitely must look into. For diffuser dehumidifiers, it’ll be beneficial for you if you check look at the following aspects before finalizing your purchase.


All the devices mentioned in this review use ultrasonic technology. Such models are better than heat-based diffuser humidifiers as they last longer and the essential oils retain all their benefits. They also use less energy as they do not require any heat at all. Instead, they use cool mist which is less harsh on you and your surroundings. This includes pets, plants, and furniture.

Area Being Covered

It's important to note that most devices mentioned in this review are small and more compact. Therefore, the room capacity that they cover is defined accordingly. It is possible that these devices may not be as effective in larger rooms than they are in smaller or medium-sized rooms.

Cleaning and Maintenance

Since diffusers and humidifiers are used frequently and the main process used is evaporation, the devices can accumulate residue. So, if you want your device to work at an optimal level, they need to be cleaned and maintained at least once a week.


The five products discussed in this review all are very efficient and effective. Though these five units have their pros and cons, the good mostly outweighs the bad. Since each device is different, you can pick and one that is best suited to your needs. As long as you keep in mind the pointers that we suggest remembering, you should be good to go!