Essential Oil Diffuser vs. humidifier

What is the difference between an oil diffuser and a humidifier? Can you add essential oils to any humidifier? What is the BEST essential oil humidifier? ALL great questions!

It is confusing because BOTH devices seem to disperse a mist of water into the air so they must serve the same purpose right? Not exactly. So if you’re wondering what is the best way to get the therapeutic effects of essential oils while adding moisture to the air, keep reading!

humidifier releasing moisture into the air

What is an essential oil diffuser?

The main purpose of an essential oil diffuser is to break down and diffuse, or spread, oil particles into the air using tiny water droplets. These oil particles have a strong aroma and are very potent, or powerful. An oil diffuser is simply an aromatic air freshener. Read more about what essential oils are.

People use oil diffusers to promote wellness and create a calming or even uplifting environment using different natural plant botanicals. There are many different types of essential oils out there, some more popular then others.

It is important to point out that not ALL essential oil diffusers require water. So if you want to add essential oils to the air AS WELL AS add moisture, you definitely want an ultrasonic diffuser. An ultrasonic diffuser is the same thing as a humidifier.

What is a humidifier?

A humidifier is a device that simply adds humidity, or moisture to the air. People use humidifiers if the air is particularly dry inside. Adding water vapor into the air can help with respiratory issues, dry skin, allergies, or even headaches. They are very popular however humidifiers are not equip to properly diffuse oils.

putting essential oils In your humidifier

A lot of people wonder if you can put essential oils in a cool or warm mist humidifier. The answer is, NO! Standard humidifiers are not made to diffuse essential oils. Essential oils are corrosive and can damage or break down the plastic inside your humidifier. The only exception is if you purchased a two-in-one humidifier/diffuser.

banner that says, "All ultrasonic essential oil diffusers ARE humidifiers but not all humidifiers are oil diffusers."

Both ultrasonic diffusers and humidifiers release water into the air but both are not meant to break down essential oils. So it is accurate to say that all ultrasonic essential oil diffusers ARE humidifiers but not all humidifiers are oil diffusers.

So how can you benefit from BOTH added moisture to the air and the relaxing aromas of essential oils? That’s simple. Just purchase a cool mist humidifier & essential oil diffuser in one!

oil diffuser diffusing essential oils on table

So what are the BEST humidifier and diffuser products on the market?

There are so many awesome products that can diffuse essential oils while adding moisture to the air. Some are more expensive than others because they can hold more water or offer special features.

Some features to consider before purchasing an essential oil humidifiers

  • What is the water capacity? Some humidifiers may be to small for certain rooms in your house. You also don’t want too LARGE of a humidifier.
  • Does it automatically shut off? It is nice to have a timer so you can set it to shut off on its own.
  • How loud is it? Some humidifiers or diffusers are loud so if you want to leave it on while you’re sleeping, look for one that is on the quieter side.
  • Is a filter needed? Some humidifiers require you to change a filter so try to look for one that doesn’t require this!
  • Where do you add your oils? Most essential oil diffusers have a tray that slides out allowing you to easily add your oils.
  • Does it have a mist controller? Some humidifiers will have different mist levels which allow you to control how humid you want the room.
  • Does it have a humidity sensor? Adding too much moisture to the air can have adverse health effects. Look for one that has this feature built in especially if you plan on leaving it on at night.
adding essential oils to a humidifier

What are the MOST popular essential oil humidifiers?

Here is a list of the top humidifiers that you can use essential oils with! They all have great reviews and are not going to break the bank.

  1. Everlasting Comfort Humidifiers for Bedroom (6L)$60 – I hate refilling my diffuser so if you do too, this one is for you! It has one of the largest water tanks and can last 50 total hours without needing a refill! It features a tray where you can add your essential oils and can diffuse rooms up to 500 square feet. No filter is needed and it will automatically shut off!
  2. Homasy Cool Mist Humidifier (4.5L)$40 -This humidifier is awesome if you’re looking for something smaller. I love that this one has a mist controller allowing you to control the mist level! It also has a sleep mode which will shut off while your sleeping where some do not have that option. It will diffuse up to 30 hours and are for rooms up to 538 sq. ft.
  3. UFRESH Cool Mist Humidifiers (5.5L)$70 – Okay, if you are into technology and love operating things from your phone, THIS is diffuser is for you! It allows you to customize the moisturizing time and mist levels using the APP on your smartphone. This means, you can turn it on before you get home! I LOVE that! You can diffuse up to 24 hours and will automatically shut-off when its empty. Its essential oil tray allows you to add your oils directly to it.
  4. Lasko UH200 Cool Mist Humidifier with Essential Oils (2.8L)$43 – This diffuser has a smaller tank which allows you to place it directly on your nightstand. A neat feature it has is a nozzle that allows you to direct the mist in whatever direction you wish. It also has 7 nightlight colors to choose from as well an essential oil tray to add your oils. The best thing about this humidifier is the clear tank which allows you to see how much water is left.
  5. TaoTronics 3-IN-1 Humidifier with Essential Oil Diffuser and Night Light (2.5L) – $40 – This diffuser is ideal for small bedrooms. It is BPA free, always a plus, and is super quiet with no beeps or fans so it is ideal for kids rooms. It also has a soft nightlight and a mist level dial to control the mist output. This one does not have a pull out essential oil tray. Instead, you add your oils directly to the water.
  6. GENIANI Top Fill Cool Mist Humidifiers for Bedroom & Essential Oil Diffuser (4L)$55 – This one is “smart”! It has a built in sensor which controls the humidity level in the room so it does not get too humid! Very cool! It can last up to 18 hours and fill a room up to 220 sq. ft with an auto shut off feature. Essential oils are added to a tray for ease.
  7. ASAKUKI Premium, Essential Oil Diffuser (500ml) – $25 – This one is the cheapest on the list since it has the smallest tank making it perfect for smaller rooms up to 320 sq. ft. It has a timer shut-off and allows you to choose between a strong or weak mist. You can also choose from 7 colors to display as a fun night light and simply add your essential oils directly to the water!
an essential oil diffuser releasing a mist

Final essential oil diffuser tips

As long as you purchase a humidifier that is also made to diffuse essential oils, you’re set! Diffusers can be very inexpensive or on the pricier side. If you want a larger tank with cool features, you can expect to pay more money. I think the two most important things to consider is the size of the room you want to diffuse and the shut off features it provides. Other than that, choose which diffuser you like best and whichever one LOOKS best!

Other essential oil Reads:

Where To Buy Essential Oils?

Do Essential Oils Really Work?

How to use essential oils

Popular list of essential oils

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