Best Essential Oil Diffuser for Large Room & Space

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Diffusers are becoming an increasingly popular method of finding comfort in our fast-paced lives. Imagine creating a zen-like atmosphere in any room in the house allowing you to destress at the end of the day. The fresh scent washes over you and you feel your stress melt away; your mood gradually evens out, your energy levels are restored, and you’re no longer overwhelmed by your work. The best essential oils can make all the difference in making your home feel like home.

Aromatherapy oils can have very different properties and thus very different uses. There are some aromatherapy oils that can alleviate anxiety or help you deal with illness, you can even get oils specifically made to repel insects or boost your immunity with their antimicrobial properties.

If you’re interested in diffusers and want to find out which one is best for your home or office, read this handy guide. We’ll tell you what to look for, what you’ll get out of your diffuser, and which ones are our top recommendations!

Why Should I Get an Essential Oil Diffuser?

The most obvious advantage that you can get out of best essential oil diffusers is that it will make a space smell better. Any unpleasant odors that might be lingering around won’t be as noticeable with a diffuser handy. And if you’re worried about the smell of the essential oil becoming overpowering; don’t be! Since you can choose how concentrated your oil mixture will be, you can tailor the strength of the smell to your own preferences.

Having a diffuser can also elevate your spirits and relax you, depending on what essential oils you choose to put in it. Mint and Lemongrass are often chosen for the spa-like ambience of rest and relaxation they give to a room; while those setting up for cuddle time on the couch might choose Rose or Ylang Ylang oils to set the mood.

The essential oils you choose do more than just make your rooms smell good: they are also known to have therapeutic properties that can help you when you’re sick. Lavender oil is often recommended to induce a sense of calm for people experiencing anxiety or panic; while eucalyptus or peppermint are great for breathing more easily if you have a cold or the flu.

Apart from improving your health, there are essential oils that can keep bugs at bay, so you don’t have to use insecticides full of harmful chemicals. Just pop a few drops of your desired blend into a diffuser and let the fragrance circulate—no more itchy insect bites! Citronella, eucalyptus, and tea tree are just some of the many oils that are fantastic, all-natural insect repellents.

Diffusers also have the added benefit of affecting the amount of moisture in your room. You can adjust the misting settings to make the air a bit more humid. This is a godsend on those dry summer days, it’s also very useful for keeping your skin moist and avoiding dry eyes—this is especially important if you have to stay up for work and need to look at a screen for hours.

Because essential oils are so uniquely good at adjusting our moods and improving our breathing, they’re also highly recommended for people who have trouble sleeping, or for those who suffer from heavy snoring. Many aromatherapy users see a massive improvement in the quality of their sleep.

Best of all, diffusers are a safer alternative to candles for aromatherapy. While many candles contain essential oils, they can contain toxic ingredients or irritate our lungs. They can also heat up a room and pose a fire hazard. A diffuser will give you all of the benefits without any of these problems.

If you like the sound of all these benefits, you should really consider installing an essential oil diffuser in your home, or office. The aromatherapy can really make a difference to your day.

We also reviewed and test the best space heaters for large spaces here check them out!

Different Types of Essential Oil Diffusers

Evaporative diffusers

With a small built-in fan, evaporative diffusers draw in air and combine it with essential oils, allowing a fragrant vapor to come out without the use of any heat or water. These diffusers are very popular for scenting rooms and they produce very little noise and are quite cheap. But since the drawn air will push lighter particles out before the heavier ones, the denser elements of your essential oils will take more time to circulate.

This kind of model is highly recommended if you’re looking to perfume or deodorize a room without breaking the bank, but it’s not the best one for therapeutic use and aromatherapy blends.

Humidifying diffusers

This diffuser mixes water and essential oil to produce a fine mist. This mist then circulates around the room, adding to the moisture in the air and alleviating dryness. While most humidifying diffusers are normally used to make a room more comfortable, there are now models on the market which can deliver medication through diffusion—just check your potential choices if they’ve been approved by the FDA.

Even if you’re not using one for medication, these diffusers are excellent at adding water to the circulating air, which can alleviate the symptoms of a lot of respiratory conditions.

A con to getting this feature is that you have to be careful about cleaning the machine. Uncleaned humidifiers can easily develop mold or worse, can get bacteria growing in them. Mineral deposits also need to be cleaned out if you’re mixing your essential oils with tap water in this diffuser, so just make regular maintenance a part of your routine.

Nebulizing oil diffusers

Not to get too scientific, but Essential oils can have pretty bulky particles, which makes the release of their scent slow. What nebulizing diffusers do is break these particles down by blowing air through them. The scented air is then released, with the much smaller fragrance particles now able to circulate faster in the room. Also known as nebulizers and atomizers, these are the diffusers of choice for people who want to explore the healing power of aromatherapy.

These diffusers are the best at distributing a scent through a large room, as they are designed to evenly break down the oil without any heat or added water. Some models even have timers; so you can choose how long it runs.

A downside is that these diffusers can often come with large, noisy motors that could detract from your relaxing atmosphere, so make sure you check the sound made by any model you’re considering.

Heat diffusers

Heat diffusers are also known as candle diffusers. They use heat to make the essential oils into a spray, and heat levels can be adjusted to make the scent stronger in the room. While these traditional diffusers are much quieter and less expensive than other models, you won’t be able to get as many health benefits from it as the heating element can break down the oils and change them so much that you’re getting all the scent, but not any aromatherapy.

If you’re just looking to have a room smell great, this is definitely the budget-friendly choice for you. If you’re looking to get more out of your essential oils, think carefully before you pick this kind of diffuser.

What Should I Look for in an Essential Oil Diffuser?

One thing you should consider when choosing an essential oil diffuser is the average temperature of the space you’ll be placing it in. If the room is a bit dry, this can have damaging effects on your skin and respiratory health, so a humidifying diffuser may be a better option than a heat diffuser. If the space is already very moist, it may not be a good idea to get a humidifier as it will increase moisture levels in the air, making it seem thick and swampy.

Some models use mechanical belts or motors to break down the oils and allow them to waft into the air, which can create a certain level of noise. Find out how much noise can be generated by your diffuser model before you install it, because this feature can spoil the relaxing atmosphere you’re trying to create! If silence isn’t a huge factor, getting one with a slightly noisier but stronger motor is also a good idea because that will allow the oil to diffuse more efficiently.

Size and capacity are definitely a major consideration. A larger diffuser may take up more space, but it can hold more essential oils for misting, which allows longer gaps between refill times and lets your diffuser perfume larger spaces.

Lighting options are a choice you should also consider. It’s proven that light levels affect our comfort levels and moods. Some diffusers allow you to adjust the light settings to your desired brightness, or double as night lights with a warm, soft glow perfect for sleep-time. They can also glow different colors so you can set a particular mood in your room.

Timers are an additional feature which you might not think particularly necessary. But trust me when I say it’s a must-have! A timer will ultimately save you money, as they will automatically shut down after a designated period. That way even if you forget to turn your diffuser off and leave it running, you won’t be adding to your power bill. Timers can also allow your diffuser to switch off when the oil level is low, saving your device from possible damage.

Our Top Five Essential Oil Diffusers Reviews !

#1. Tenswall 400 ml Aromatherapy Essential Oil Diffuser

Capable of operating from ten to fifteen hours at a time, this diffuser has excellent oil capacity and multiple time settings. You can choose to set operation for one, three, or six hours, or set it on a continuous dispersal mode. It also has a seven LED colored light option that lets your selected hue glow from the vase. The light can be adjusted to dim down or brighten up your space. You can even set this diffuser to only one color, or to cycle through all seven.

The Tenswall has a subtle wood grain finish and looks like a decorative vase, making it a modern, useful accent in your home or office. While it’s made of plastic, it does not contain any harmful chemicals nor does it use heat for diffusion, so there is no danger of inhaling toxic particles while it breaks up the essential oil. It automatically shuts down when the essential oil levels are low, keeping the diffuser from breaking down. It also comes with a one year warranty, making replacement a breeze.

#2. OliveTech Arome Essential Oil Diffuser/Cool Mist Humidifier

This quiet little diffuser uses ultrasonic waves to disperse essential oils. With customizable time settings and a classic dark wood finish, the OliveTech is a popular choice for those who want to set the mood without messing with their Feng Shui.

The OliveTech has seven LED lighting options as well, and will also shut off when essential oil levels are down. What sets it apart is that you can control how it mists: a finer mist for regular days, and a stronger one that’s great when the atmosphere is too arid or chilly. Whether it’s sunny as heck outside or the dead of winter, this diffuser can change the moisture level inside your home, protecting your skin and respiratory system. It also comes with an 18-month replacement warranty!

#3. InnooCare Ultrasonic Cool Mist Diffuser/Humidifier

Made specifically to operate as silently as possible, this ultrasonic diffuser holds up to 500 ml, meaning it can dispense essential oils into the air continuously for a whole day without the need to refill it. It’s a very customizable model, as it comes with multiple functions. The air purifying and ionizer settings are great for filtering out microbes, allergens and dust, and the humidifier option can ease difficulties in breathing.

It also functions as a nightlight with its seven LED color choices, and turns off when the oil’s almost out. If you want to use it in the daytime, you can easily set it to run for 1, 2, or 3 hours, or to run continuously until the essential oil has been fully diffused. It comes with a cleaning brush and measuring cup for hassle-free maintenance and use.

#4. URPOWER 350ml Aromatherapy Essential Oil Diffuser

Another quiet ultrasonic model, the URPOWER weighs in at a light 1.1 pounds but still has a capacity of 350 ml, allowing it to disperse essential oils continuously for up to nine hours! It’s very portable and powerful, easily diffusing mist into spaces as large as over 300 square feet. It also has an automatic shut down feature for low oil levels to conserve energy.

It’s made of BPA-free plastic and is easy to clean, and it also has a humidifying feature that can increase moisture in the air for up to 120 square feet. You can also choose to set some ambience in your room with one of its LED colors, or let the diffuser gently glow all the colors in a calming sequence. If the URPOWER’s light is too bright for you, you can dim it to your desired setting.

#5. TaoTronics Essential Oil Diffuser

With a capacity of 300 ml and cool misting settings, the TaoTronics diffuser is a great choice for dispensing your chosen essential oil without any noise or heat. It’s an ultrasonic model with multiple options for a finer or heavier mist, and can operate continuously for up to eight hours without refilling.

It has several time settings you can choose from—1, 3 or 6 hours depending on the timer you set. Try not to fill the oil level above the maximum line, as the TaoTronics diffuser will only emit small amounts of mist at first to prevent the device from getting damaged. The auto shutdown function also ensures that the diffuser stops running as soon as the oil level dips too low or runs out completely.

Want to create a certain atmosphere in your room? Play around with the LED color settings—you can choose from seven and can have this diffuser glow your favorite color all day. You can also opt not to have it glow any color, so it doesn’t distract or disrupt.


Indulge your senses and protect your health with an essential oil diffuser. Everyone deserves the luxury and coziness that a diffuser can bring to a room. This small device can make such a large difference in your overall health and moods, so why not take the first step to a happier, healthier you, and look into buying a great essential oil diffuser? Just pop in your favorite oil blends and let the device take care of you.

Think about how much easier you’ll breathe and how your anxiety will melt away after you make your room an oasis of calmness. A diffuser today will keep the stress out of your life!