13 Best Essential Oil Diffusers For Large Space

Best essential oil diffusers for large space have a variety of uses. They can freshen up the air at your home, set the mood for a romantic evening, and even treat breathing disorders! These type of oil diffusers undoubtedly have the most benefits, and all that for quite an affordable price! If you are looking for the best essential oil diffuser for your large rooms, we have quite a bit to show you.

All 13 Best Essential Oil Diffusers for Large Rooms

  1. VicTsing 300ml Diffuser
  2. URPOWER 300ml Whisper-Quiet
  3. NEXGADGET Ultrasonic 400ml Aroma
  4. Apalus 500ml Ultrasonic Diffuser
  5. URPOWER 500ml Aromatherapy Diffuser
  6. iSELECTOR 500ml Glass Diffuser
  7. doTERRA Petal Diffuser
  8. ASAKUKI 500ml Premium Diffuser
  9. Housmile 600ml Aromatherapy
  10. TomCare Square 700ml diffuser
  11. Tenswall Square 900ml Diffuser
  12. Exqline 1500ml Aroma Diffuser
  13. hOmeLabs 4-liter Cool Mist Diffuser

We know you may get confused with all these oil diffuser brands and specs. To rescue you from this dilemma, we have suggested our best pick right below and prepared a comprehensive buying guide for you. You will find it end of this article.

Best Pick by SleepSeed

Our favorite essential oil diffuser for a large room was hOmeLabs 4-liter oil diffuser, which is the most interesting and functional model on this reviews. While it lacks LED lights, it features sleep mode and child lock, which make this oil diffuser perfect for installing in your baby room. Not to mention its huge 4-liter water tank! And the best thing about hOmeLabs’ model is that it does not substantially differ in price from other models!



Best Essential Oil Diffusers Comparison

1500 10-20 5.7 * 5.7 * 9.5
300 10 6.6 * 6.6 * 5.7
3 URPOWER Whisper-Quiet 300 10 6.6 * 6.6 * 4.8


400 8-12 10.3 * 6.9 * 6.7


500 10 4.8 * 6.6 * 6.6


500 8 7 * 6.5


900 21 7 * 7 * 5.3


4000 + 3000 Humidity Capacity 30 10.5 * 10.5 * 12

doTERRA Petal

200-400 (Not Specified) About 10 5.8 * 5.8 * 5.4


500 10-16 6.6 * 6.6 * 4.8


700 10-20 6.5 * 6.3 * 5.7

Housmile 600ml

600 8 7.5 * 7.5 * 7.9


500 8-18 6.7 * 6.3

Best Essential Oil Diffusers Detail Review for 2018

1. VicTsing 300ml Diffuser

Best Essential Oil Diffusers for Large Space VicTsing 300ml




VicTsing’s ultrasonic diffuser features 300ml water capacity, which will be enough for up to 10 hours of continuous output. The device features 25-30 square meter (270 –320 square feet) coverage. After the water is all used, the device will automatically shut off.

This model has 4-time settings – 1-, 3-, 6-hour, and steady on. This will allow you to just start the diffuser up and forget about it, the device will do its job and then shut off.

The ultrasonic technology allows for exceptionally quiet operation and undisturbed sleep. Additionally, this model features 7 LED light colors with adjustable brightness levels, but you could turn them off completely.

You can use VicTsing diffuser as a humidifier as well. With strong/weak mist settings, you could soften and moisturize your skin in winter with this unit.

This diffuser has a remarkable and compact design with wood grain texture, making it look natural and simple. The device measures 6.6 x 6.6 x 5.7inches. VicTsing diffuser is also built of BPA-free materials.

The main downside of this model is its rather inconvenient control panel with only 2 buttons. It will be initially unclear which button does what.


  • Up to 10 hours of operation.
  • Has auto shutoff.
  • Features 4 time settings.
  • Strong and weak dispersion modes.
  • 7 LED light colors.
  • Quiet
  • Simple and natural design.
  • Made from BPA-free materials.
  • Backed up by a 1-year warranty and 45-day money back guarantee.


  • Rather inconvenient. All the features are controlled with only 2 buttons.
  • Not shipped internationally on Amazon.


2. URPOWER 300ml Whisper-Quiet

Best Essential Oil Diffusers for Large Space URPOWER 300ml



In the terms of design, URPOWER’s oil diffuser is pretty much identical to the one offered by VicTsing. But the design is not the only similar thing in this model.

It has the same capacity as VicTsing 300ml diffuser and can work for the same 10 hours.The manufacturer doesn’t have the coverage of the unit specified on the Amazon product page, but it is probably the same as with the previous model.

In the fields of timer options, this model is still the same! It features 1-, 3, 6-hour, and constantly on modes. The 7 LED light colors have brightness levels also.Additionally, you could use it as a humidifier. The safety auto shutoff feature is here as well. Lastly, BPA-free materials are at the base of URPOWER diffuser.

This model measures 6.6 x 6.6 x 4.8 inches in dimensions.

With this diffuser, you get the same inconvenient control panel as with VicTsing’s device.Unfortunately, there is no data on the warranty on the Amazon product page.


  • 300 ml of capacity.
  • Has 4 timer options.
  • Two mist diffuse modes.
  • 7 light colors with adjustable brightness.
  • Has auto shutoff.
  • Quiet and simple design.
  • Built with BPA-less materials.


  • No warranty data on the product page.
  • The same inconvenient 2-button panel.
  • Not shipped internationally.


3. NEXGADGET Ultrasonic 400ml Aroma

Best Essential Oil Diffusers for Large Space NEXTGADGET 400ml



Yet another simple-design model in our reviews. This one actually looks like a vase and features the same wood texture featured in the previous two diffusers.

The water tank of NEXGADGET’s ultrasonic diffuser is 400ml. This allows for about 8-12 hours of work time, depending on the dispersion intensity. You may say that it’s almost the same as with the 300ml models we examined earlier, but keep in mind that 10 hours for 300 and 400 ml are not the same things. This one will be spreading the oil elements more intensively.

You could use this device as both a diffuser and humidifier plus as an ionizer, air purifier, and night lamp.

NEXGADGET has 1-, 3, 6-hour, and constant on working modes, which is the same as with the previous two diffusers. The LED lights feature 7 color options, each with two levels of brightness.

The must auto shutoff function is also present in this model. Additionally, the oil diffuser is built of BPA-less materials, as expected.

NEXGADGET measures 10.3 x 6.9 x 6.7 inches – it is quite a bit higher than the other models we will be reviewing.

Once again, this model has the same unclear control panel as the previous two models.


  • Works as a diffuser, humidifier, ionizer, air purifier, and night lamp.
  • 400 ml tank capacity.
  • 8-12 hours of working time.
  • Adjustable spread intensity.
  • 4 inbuilt timer options.
  • 7 adjustable light colors.
  • Nice design.
  • Auto shutoff function for safety.
  • BPA-free.
  • Covered by 18-month warranty and 45-day money back guarantee.


  • Again, inconvenient 2-button controls.
  • Needs more room due to its height.


4. Apalus 500ml Ultrasonic Diffuser

Apalus Ultrasonic essential oil diffuser



500ml diffuser by Apalus is capable of covering about 1000 square feet during 8-18 hours, which makes this diffuser one of the most potent devices we reviewed today.

Apalus has 1, 3, 6 hours, and continuous on operation modes. The chosen mode is indicated via a light above the corresponding label.

This unit features 7 LED light colors, but there is no brightness adjustment. The illuminated cupola-shape cover makes this product a pretty good choice for night lamp use as well.

Apalus diffuser will ensure your safety with its auto shutoff feature. Additionally, its materials are BPA-free, which will allow you to avoid BPA-related health complications.

Apalus 500ml diffuser measures 6.7 x 6.3 inches.

Overall, this model would be a good pick for larger rooms, but it won’t be sufficient for especially big living rooms and bedrooms. Before buying this model, make sure that your room area does not exceed 1000 square feet.


  • Moderate-volume 500 ml water tank with 8-18 hours of runtime.
  • 1000 square feet coverage.
  • 4 timer settings.
  • 7 light color settings.
  • Has auto shutoff.
  • BPA-free materials.
  • 1-year warranty.


  • Won’t be suitable for truly big rooms.
  • No light brightness adjustment.


5. URPOWER 500ml Aromatherapy Diffuser

Best Essential Oil Diffusers for Large Space URPOWER 500ml



This URPOWER diffuser has 3-in-1 functionality – it can work as an aromatherapy diffuser, humidifier, and night light.

With the bigger 500ml water tank, this model is able to work for about 10 hours. If you don’t want the diffuser to run constantly, just turn off the ON mode and put the inbuilt timer on either 1, 2, or 3 hours. The intensity of spraying can be additionally adjusted.

This URPOWER oil diffuser comes with 7 built-in LED light colors, which you could turn off if they are not necessary.

As for safety, the auto shutoff feature will shut down the diffuser once it runs out of the water.

The design of this oil diffuser is quite interesting. The LED color you choose lights up to the whole device. You could say that it is a night lamp all by itself!

The dimensions of this model are 4.8 x 6.6 x 6.6 inches.

A disturbing issue with this model is the beeping sound the device makes when you adjust settings. It may wake up your sleeping partners or your baby!

URPOWER didn’t put any warranty data on their product page, unfortunately.


  • 500 ml capacity.
  • Two mist dispersion modes.
  • About 10 hours of running time.
  • 4 timer settings.
  • 7 built-in LED light colors.
  • Auto shutoff.
  • BPA-less.


  • No warranty data on the Amazon product page.
  • Adjusting settings makes a beeping sound, which may be a problem if there is someone sleeping near you.
  • The brightness of the LED lights is not adjustable.


6. iSELECTOR 500ml Glass Diffuser

Best Essential Oil Diffusers for Large Space ISELECTOR 500ml



ISelector’s oil diffuser is pretty similar to what we have already seen in terms of specs but not in terms of design. If you don’t know what you are looking at, you may even confuse this diffuser with a night lamp. Its whole cover is illuminated by the 7-color LED lights!

As for the device’s oil diffuser-related specs, the ISelector features a 500ml water tank, which allows the diffuser to operate for 8-18 hours, depending on the chosen mode. Speaking of modes, there is high and low mist output. The diffuser can cover an area of up to 1000 square feet.

Another feature is 4 timer options, including 1-, 2-, 3-hour, and constantly on modes. The oil diffuser can be used as a humidifier as well. The device will shut down automatically upon running out of the water thanks to tits auto shutoff feature.

As you would expect, the diffuser is built from BPA-less materials.

Lastly, ISelector oil diffuser measures 7 x 6.5 inches.

This model has a couple of sad drawbacks, like no LED light brightness adjustment, no indication of the selected mist mode, and the constantly on-light indicator of the selected timer option. But those are not major drawbacks and do not impact the overall performance of the diffuser!


  • The 500ml water tank delivers 8-18 hours of operation time.
  • Has 1000 square feet coverage.
  • Strong and weak mist output options.
  • Comes with 4 timer settings.
  • 7 lights colors.
  • Auto shutoff.
  • Made from BPA-free components.
  • 1-year warranty.


  • The brightness of the LED lights is not adjustable.
  • No indication of which mist mode the device is in.
  • The timer option light indicator cannot be turned off.


7. doTERRA Petal Diffuser

Best Essential Oil Diffusers for Large Space doTERRA Petal



doTERRA Petal is another compact model diffuser. We can’t say how much water its tank can hold as the manufacturer for some reason didn’t specify it on either their Amazon product page or their website. But judging by its 5.8 x 5.8 x 5.4-inch, it should be around 200-400 ml. The running time thus should be about 6-10 hours.

What we do know however is the coverage of the device, which is a quite good 330 square feet. This should be perfectly enough for not too big rooms.

The doTERRA Petal features 3 timer options – 1, 2, and 4 hours. It seems that there is no continuous on mode with this oil diffuser.This unit has optional LED light and auto shutoff as well.

At last, this oil diffuser measures 5.8 x 5.8 x 5.4 inches.

The manufacturer doesn’t indicate whether the device is BPA-free or not, but user reviews on Amazon read that the materials indeed are without BPA.

We have a more in-depth review of doTERRA Petal diffuser, so take a look at it if this model interests you!

More on doTERRA Diffuser


  • Good coverage of 32 square feet.
  • Features auto shutoff.
  • 3 timer settings.
  • One LED light color option.
  • Simple and affordable.


  • No warranty data either on the Amazon product page or doTERRA official website.
  • No data on the capacity and the running time.
  • Should be BPA-free, but not specified by the seller.


8. ASAKUKI 500ml Premium Diffuser

Best Essential Oil Diffusers for Large Space 2017 ASAKUKI



ASAKUKI diffuser’s seller has luckily all the necessary features specified. The water tank of this model is 500ml, which allows for quite nice 10-16 hours of runtime, depending on whether you set the device to high or low intensity.

ASAKUKI’s oil diffuser/humidifier has 4-time options – 1, 2, 3 hours, and constantly running. Additionally, the unit has 7 LED light colors with two brightness levels.As for safety, the auto shutoff function will turn the diffuser off once it runs out of the water.

AKASUKI  diffuser measures 6.6 x 6.6 x 4.8 inches. The plastic materials this diffuser is built from are BPA-free.

The control panel of this model is again somewhat inconvenient as there is no indication of which mode or timer is currently selected.

What’s noteworthy about this model is that it has a 6-month money back guarantee, apart from its 1-year limited warranty!


  • 500 ml water capacity and 10-16 hours of running time.
  • High/low mist intensity.
  • Has 4-time modes.
  • 7 LED colors.
  • Has auto shutoff feature.
  • BPA-free materials.
  • 1-year warranty and 6-month money back guarantee.


  • No indication of which mode/timer is set.


9. Housmile 600ml Aromatherapy

Best Essential Oil Diffusers for Large Space Housemile 600ml



Housmile’s has a 600ml water tank, which allows for rather modest 8 hours of operation. But the reduced runtime combined with such capacity means that this model disperses oil elements more efficiently!

This device has strong and weak mist output options. With the 360-degree rotating cover, you can easily decide in which direction the diffuser should disperse the oil elements.

Housmile diffuser comes with 7 LED light colors, although you probably won’t be able to use this model as a night lamp as the lights are pretty small and are located at the bottom of the device. This unit features an auto shutoff function as well.

The plastic of this diffuser is free of any BPA.

Unfortunately, Housmile’s diffuser doesn’t have timer options, so you would have to manually switch it on and off. Alternatively, it would shut down upon running out of water.

For some reason, this model measures 7.5*7.5*7.9 inches despite having only a 600ml tank. It is bigger than some of the more-capacious devices we are yet to review!

Additionally, you can’t understand which button does what if you haven’t acquainted yourself with the manual.

But all in all, this product has good features for an affordable price!


  • 600 ml water capacity.
  • Quite good 8 hours of runtime.
  • Strong and weak mist output.
  • The 360-degree rotating top allows you to direct the mist output.
  • 7 LED colors.
  • Has auto shutoff.
  • Is BPA-free.
  • 1-year warranty.


  • Quite big for its water capacity.
  • The buttons have no labels.
  • Won’t work well as a nightlight.


10. TomCare Square 700ml diffuser

Best Essential Oil Diffusers for Large Space TomCare 700ml



The next model on our list is TomCare Square ultrasonic diffuser. It features 700ml water capacity, which will be able to deliver 10 hours of runtime in strong mist mode and 20 hours in weak mist mode. There are 4-time options in this device – 1, 3, 6 hours, and constantly on.

This model also features 7 LED light colors with adjustable brightness. The light could be even turned off if you don’t need it.

When the oil diffuser runs out of the water, it automatically shuts down thanks to the auto shutoff feature.

The materials of this device are BPA-free. It also measures 6.5 x 6.3 x 5.7 inches.

What’s great about this model is its design. The whole cover is lit up by the LED lights, which makes it look more like a lamp. The wood-texture cutout on one of the corners may seem unnecessary, but we think that it makes this essential oil diffuser rather elegant. The base of the device is covered with wood texture as well. Overall, Square diffuser looks beautiful and will fit any room and environment.

The main drawback of this model is that it is quite noisy, according to the reviews of the users. Another downside is that you can’t see which mode the device is in as there are no indicators on it.


  • 700ml water tank.
  • 10-20 hours of operating time.
  • Weak and strong mist modes.
  • 4 timer settings.
  • 7 light color options.
  • Has auto shutoff.
  • Built from BPA-less materials.
  • 1-year warranty.


  • Complaints on the overall noisiness.
  • No indication of the chosen mode or timer option.
  • Not shipped internationally.

11. Tenswall Square 900ml Diffuser

Best Essential Oil Diffusers for Large Space Tenswall 900ml



Time for something more high-capacity on our reviews of best essential oil diffuser for large rooms and spaces! Tenswall’s ultrasonic oil diffuser offers 900 ml of capacity, which allows for up to 21 hours of operating time! But because you probably won’t need to have the device running for that long, it has 4-time settings – 1, 3, 6 hours, and continuous dispersion. Auto shutoff is also here. Despite being more high-capacity, this model is not that big and measures only about 7 x 7 x 5.3 inches.

The Tenswall diffuser has 7 LED light color options. You could either set a steady light or put the device in light-changing mode. Unfortunately, no brightness adjustment. All the settings can be adjusted via the built-in touch panel.

The design of this oil diffuser is also noteworthy. It has rather simple, square appearance, but the marble texture looks gorgeous and makes this diffuser particularly good for kitchens!

The materials of this unit are BPA-free. Also, Tenswall oil diffuser measures 7 x 7 x 5.3 inches.

It should be noted that there have been quite some complaints on the overall messiness of the device – it spills water when removing the cover regardless of the water level.


  • 900 ml capacity.
  • Up to 21 hours of running time.
  • 4 times modes.
  • 7 LED light colors in either steady or color-changing mode.
  • Convenient and clear touch control panel.
  • Auto shutoff.
  • Simple yet good-looking design with marble texture.
  • BPA-free.
  • 2-year warranty.


  • No LED light brightness regulation.
  • Complaints on water spilling whenever you remove the cover.


12. Exqline 1500ml Aroma Diffuser

Best Essential Oil Diffusers for Large Space Exqline 1500ml



This ultrasonic diffuser comes with an extra-large 1500 ml water tank, which allows the unit to work for up to 10-20 hours without refilling. This makes Exqline oil diffuser an ideal choice for those who want their device to work longer without constant refilling.

This large size diffuser humidifies the air in up to 325 square feet and provides aromatherapy scent coverage at up to 450 square feet.

The device has 7 LED light colors with adjustable brightness. You could even turn it off if you will be putting the diffuser in your bedroom and don’t want your sleep to be disturbed. Additionally, this diffuser produces only 35 dB of noise thanks to Whisper Quiet Technology.

With the 270-degree rotation knob, you can set the amount of vapor coming out and the humidity level.

Exqline oil diffuser is fairly compact and measures 5.7 x 5.7 x 9.5 inches.

This model is completely built of BPA-free materials. Auto shutoff is also at its place.

A sad downside of this model is that it doesn’t have a built-in timer. Besides, it is quite messy as the water tank cover collects condensate, which may spill out of the device when removing the cover.


  • 1500 ml water tank for up to 10-20 hours of operating time.
  • Easy to use.
  • Adjustable vapor production and humidity level.
  • 7 light colors.
  • Produces only 35 dB of sound.
  • Made from BPA-free materials.
  • Covered by 1-year limited warranty.


  • Bad design of the plastic cover. Water condensate gets where it shouldn’t be when the cover is removed.
  • Doesn’t have a built-in timer.


13. hOmeLabs 4-liter Cool Mist Diffuser

Best Essential Oil Diffusers for Large Space hOmeLabs Cool Mist



Having a huge 4-liter water tank, hOmeLabs diffuser is truly a monstrous model! It is bigger but not overly large and measures 10.5 x 12 x 10.5 inches. But most importantly, the capacious tank allows for up to 30 operation hours!

This model has 3-time options – 1, 4, and 8 hours. We are not entirely sure whether this model has constant on mode or not. Then, there are two mist options – high and low. It also has some interesting options like child lock and sleep mode. The purpose of the former is not very clear as it is not specified on the product page. Maybe it just locks the buttons so your kids do not accidentally mess with the device? As for the sleep mode, it quietens the device a bit for more comfortable sleep. All this means that hOmeLabs oil diffuser could be safely used in your baby room!

Another interesting thing about this model is that it doesn’t have LED lights. That’s a plus if you don’t need them as they won’t disturb your or your baby’ sleep. On the other hand, no night lamp used with this device!

This extra large oil diffuser comes with a cleaning brush to help you with the unit’s cleaning a little bit.

Lastly, hOmeLabs diffuser measures 10.5 x 10.5 x 12 inches.

It seems that this device is not BPA-free, though maybe the seller just forgot to specify it.

Although this model is both diffuser and humidifier, some users have stated that it works better as a humidifier rather than a diffuser. But maybe, that’s because they haven’t accounted for the significantly larger water tank, which would require more essential oil to work efficiently.


  • Child lock and sleep mode make this model ideal for your baby room!
  • 4-liter water tank plus 300 ml humidity capacity.
  • Up to 30 hours of runtime.
  • Has auto shutoff feature.
  • 3 time and 2 mist intensity options.
  • No LED lights.
  • 2-year warranty.


    • Unclear whether the device is BPA-less or not.
    • According to the users, is rather weak as a diffuser.
  • Cannot be used as a night lamp.


Essential Oil Diffuser Benefits

The benefits of essential oils are diversified. The most useful benefit of essential oil diffusers is their ability to improve your sleep. Essential oils help you with respiratory health issues, improve cognitive function, reduces stress and snoring problem! It also eliminates harmful airborne germs and insects and makes you feel fresher at home.

To further elaborate the advantages of essential oils, let us present you with 15 essential oil diffuser benefits.

1. Better sleep

One of the best benefits of essential oil diffusers is their ability to facilitate and improve your sleep. Breathing in the soothing oils is by far the easiest and quickest way to relax for better sleep. Additionally, almost all diffusers work as moisturizers and humidifiers, so they will be able to help you if dryness in your mouth or skin disturbs your sleep.

2. Fewer illnesses

Essential oils contain strong antimicrobials helping with eliminating the harmful germs hiding in your home. Airborne germs, one of the most common carriers of illnesses, are particularly susceptible to essential oils dispersed in the air.

Essential Oil Diffuser Benefits


3. Fewer insects

Flies and mosquitoes just love invading our houses. With your diffuser armed with a strong essential oil, you could make your home environment very harsh for them to live in. This advantage of oil diffusers would be more evident in hotter climates!

4. Less snoring

Essential oils like eucalyptus, vetiver, marjoram, or tea tree greatly help with snoring. It is an exceptionally unpleasant issue not only for yourself but for your significant other as well. Snoring can also lead you to obstructive sleep apnea and you might have to use CPAP machine in long run. So it should be seriously treated.

**Please read our other article on CPAP cleaning and sanitizing if you are already using CPAP machine**

5. Reduced stress and anxiety

Oils like lavender, frankincense, neroli, and chamomile are widely used to treat anxiety and relieve stress. Additionally, pleasant environment and the calmly changing colors of your diffuser could help you breathe calmer, relax, and forget your problems!

6. Improved respiratory health

Essential oils are capable of boosting immune health, improving inflammation in the respiratory tracts, and helping with eliminating colds and coughs. Lemon, palo santo, lavender, tea tree, and eucalyptus are ideal essential oils to treat your respiratory issues with.

7. Weakens appetite

Essential oils such as grapefruit, lavender, orange, ylang-ylang, and patchouli are known for their interaction with the limbic system. If you are struggling with losing weight, try those essential oils out!

8. Improved cognitive function

Essential oils efficiently activate the brain cells on multiple levels. Many essential oils have adaptogenic qualities, which are relaxing when you are stressed and can give you additional charge when you are feeling down. Besides, several essential oils are known to improve the balance of the body’s hormones. Peppermint, eucalyptus, lemon, and pine are among the most effective oils in this regard.

9. Safer than candles and incense

Scented candles usually have chemicals, which are harmful to the brain, lungs, and the central nervous system. At the same time, candles without chemicals are rather expensive. Not to mention the obvious fire hazard of regular candles or incense. With a diffuser, you have significantly reduced fire hazard.

10. Increased athletic performance

The Journal of Sport and Exercise Psychology has discovered that peppermint oil positively impacts athletic performance. Peppermint made subjects faster, stronger, and more enduring. So why not try dispersing peppermint oil in your home before hitting the gym?

11. Fresher air

Essential oils do not have harmful chemicals, like the majority of freshening sprays and plug-ins. Oils have calmer and less irritating smells, which are perfectly capable of making the air in your house much fresher.

Additionally, essential oils can really help you with eliminating unpleasant odors from your house. They are great at making your home both socially acceptable and more pleasant for you and your family.

12. Calmer children

“Peace and Calm” essential oils are perfectly capable of calming your children without any harm. If your babies are often whiny or frustrated, maybe you should give those essential oils a go and bring peace not only to your children but also yourself.

13. Cooler environment

If you don’t want to use your home air conditioner yet, you could easily duplicate its effects with essential oils like peppermint, wintergreen, and spearmint.

14. Setting the mood

With essential oils, setting the mood for thematic parties is easier than ever. Sandalwood, rose, ylang-ylang, and jasmine can ideally set the mood for a romantic evening. Pine or orange and cinnamon blend just scream Christmas!

15. Less money spent in the long run

We already mentioned that diffusers and oils are much more affordable in the long run. But they are money-efficient from the health standpoint as well. Better body condition means that you will have to worry less about paying a visit to your doctor and spending money on pricey medications. Sure, essential oil diffusers cannot treat everything and won’t replace a specialist, but for minor health issues, they may be the most efficient home tool you could get.


  2018 Complete Buyers Guide for Essential Oil Diffuser 

Essential Oil Diffusers Buyer’s Guide for 2018


How do you find the best oil diffuser?

Oil diffusers significantly vary in their quality, functionality, and efficiency. Thereby, you need to spend some time on your research so that you can make the right choice and get the Best essential oil diffuser. To do that, you will have to know the general features and types of oil diffusers to look for.

What is an Essential Oil Diffuser?

An Essential Oil Diffuser is a convenient device that helps to relieve stress. It uses vapor to fill the air with a mist scented with the essential oil of your choice. A diffuser freshens the air and fills the space with tranquillity. They are highly customizable and portable that come in many shapes and sizes.

Many people use diffusers as a path to better health – essential oils are beneficial for respiratory and skin conditions and can aid mental health by relieving stress. Diffusing essential oils throughout your home can help with mental focus, repel insects and pests, and even ward off colds.

Diffusers vs Humidifiers

A diffuser disperses essential oils through the air. A humidifier, meanwhile, disperses water vapor to fill the air with moisture. Diffusers are often stand-alone items but it is also possible to have one item that combines both functions. If you care about the air quality in your home, it makes sense to use a diffuser that also humidifies.

This is convenient in dry climates so that the best humidity level can be maintained in order to avoid problems caused by dry air such as skin irritation or breathing problems.

Types of essential oil diffusers

There are 4 types of essential oil diffusers available:

  • Nebulizing Oil Diffusers
  • Ultrasonic Oil Diffusers
  • Evaporative Oil Diffusers
  • Heat Oil Diffusers

While essential oil diffusers all do the same job, each type will substantially differ from others. They all have specific features, and knowing them is a must if you don’t want to get some noisy diffuser instead of a quiet unit.

Nebulizing oil diffusers

Nebulizing diffusers are usually the most powerful units you can find. They don’t need water and heat to disperse oil elements into the air. With these units, an atomizer generates light and airborne articles and then disperses them around the room. Nebulizing diffusers would be perfect if you are looking for something high-efficient.

Nebulizing oil diffusers have some advantages and disadvantages.


  • Easy to use. No need to fill the unit with water, only attach a bottle of essential oil.
  • Disperse high concentrations of essential oils.
  • No essential oil heat up. The units disperse the oils without altering their composition.
  • Typically allow for rest and runtime setting.
  • Have no light elements. Won’t distract you or disturb your sleep.


  • Noisier than other types.
  • Disperse oils at a faster rate. More refills required.
  • More expensive than other types.


Ultrasonic oil diffusers

Ultrasonic oil diffusers work in the same way as nebulizing units, but unlike them, ultrasonic models do need water for particle creation. Additionally, they can be used as humidifiers. It will come in handy especially in winter when there is less need for essential oil elements in the air.

All reviewed models are ultrasonic diffusers.


  • More affordable than nebulizing oil diffusers.
  • Disperse oil elements longer thanks to higher capacity water tanks.
  • No heating up.
  • Can be used as humidifiers.
  • Come in a wide range of sizes and shapes.


  • Need water.
  • Do not work with citrus essential oils.
  • Require regular maintenance.


Features of Essential Oil Diffusers
Evaporative oil diffusers

Evaporative diffusers feature a small fan blowing through a spongy material soaked with the essential oil. The fan just scatters the oil elements around the room. Usually, evaporative oil diffusers run on batteries, but some work on electricity.


  • Lightweight, easy to use.
  • Quiet
  • Ideal for personal use.


  • May disperse the oil elements unevenly.


Heat oil diffusers

As their name implies, heat oil diffusers heat up the essential oil contributing to the efficient oil distribution in the air.These are rather efficient, but the heat impacts the chemical composition of the essential oil if left unsupervised. This means that heat oil diffusers are less suitable for therapeutic needs.


  • Affordable
  • Work well in small space.


  • The heat may alter the chemical composition of the oils.


 Features of Essential Oil Diffuser for a Large Room 

Now that we are done with diffuser types, let’s examine their main features.

Operating time

Generally, you should look for the diffuser with the most operating time, but there isn’t anything wrong with going for something for your needs precisely. Some models run for about three-four hours while the most high-performance diffusers can work for 10 and even hours.

Water capacity

The water capacity is directly related to the operation time. The more capacious the water tank is, the longer the essential diffuser will run. The most voluminous diffusers typically have 1 to 4-liter water tanks.

Time cycle options

Why not look for a convenient essential diffuser with programmable timer options? With them, you will be able to set the hours when you want the device to run at. You don’t have to use a diffuser all night long. A short-cycle operation will bring the best results. So, you should look for either programmable models or ones with at least timer options.


Diffusers will disperse the essential oil element in the room you put it in, so it is critical to check the coverage of the device. You don’t want to buy a cheap model and suddenly find out that it doesn’t disperse the oil element to the whole desired area.

The most powerful models can cover 1000 square feet and even more. High-end models usually are designed to cover about 200 or 300 hundred square feet. Just know the area of the room you are going to put the diffuser in and check the devices’ specifications.

Adjustable airflow output

Customizable air pressure is another useful but not such a critical feature, although it will be necessary if you want to regulate it to your personal preference. If you wish to have full control over the dispersion pressure, look for a unit with adjustable airflow output.

Noise level

Essential oil diffusers usually do not produce too much noise, but what’s tolerable for others may be terrible for you. If you don’t like your rooms filled with noise, it would be better for you to take a look at models with Whisper Quiet Technology.

Auto shutoff

The automatic shutoff feature will make sure that your oil diffuser doesn’t burn out. If the unit runs out of the water, it may overheat and break down. And that’s the least of the issues you could face. With auto shutoff, you could even leave the device running overnight without worrying about the water level.


While some people put diffusers in their homes, others install them in their offices. In the latter case, the unit should probably be more or less in tone with the cabinet. It’s the same in regard to your home or anywhere you would be putting the diffuser. Aesthetics is highly subjective, so go for what you like the most.

Looking for those general features should be enough for you to find the best oil diffuser for a large room. If you have some specific needs, you would have to look for the right model accordingly.

 Frequently Asked Questions

How to use oil diffuser?

This will depend on the diffuser type. With some models, you would need to add the essential oil directly to the water while with others, you would have to apply it to some kind of a spongy material. But all this should be specified in the user manual of the oil diffuser.

What’s more important is how much oil you put in the water, which depends on the water capacity of the diffuser. Typically, for every 100 ml of water, you would need to add 3-5 drops of essential oil for maximum effect.

After you are done filling the diffuser with water and oil, turn it on and set the necessary running options.

Once you are done, you should drain the diffuser and thoroughly clean it.

How to clean oil diffuser?

Here is how you clean your oil diffuser:

  • Fill about the half of the device with clean water.
  • Add at most 10 drops of pure white vinegar, which will help with removing the oil stuck in the diffuser.
  • Run the device for about 3-5 minutes so the water-vinegar disperses within the unit and cleans it.
  • Fully drain the diffuser.
  • With a cotton swab dipped in vinegar, treat the tight spots and corners of the diffuser.
  • Rinse the device with clean water.
  • Drain it again and wipe the diffuser dry.

Are oil diffusers safe?

Oil diffuser’s safety relates to many factors. Whether or not it can shut off automatically if necessary, the oil being used and its build materials. Almost all modern diffusers come with the auto shutoff feature, which switches the device off upon it running out of the water, not allowing it to burn or even burst into flames.

The oil used is upon you, so if you want to use safe components, check their chemical composition before buying.

As for materials, the majority of oil diffusers are built from BPA-free components. This will be helpful if you have some allergies or other BPA-related health issues.

 Final Seed 

Hopefully, you now know everything you need about oil diffusers! We have presented you with 13 Best essential oil diffuser for large spaces or rooms, not to mention our complete buying guide for 2018. If that’s all you need and you have already chosen the right model, do not hesitate and go get it!

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