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10 Best Oil Diffusers For Large Room: Read This Before You Buy

Presently, Oil diffusers have become a great addition to our homes; they play a significant role in dispersing essential oils as excellent vapor through the air so that they can be absorbed into our bodies. However, it might not be comfortable choosing the best essential oil diffuser for your ample space as most of them are small and cannot diffuse large amounts of essential oil without continually refilling them.

In this article, we are going to help with our review of the top 10 best oil diffusers for large room ranging from 0.4 litres and above. We are here to make sure you get the best out it, besides we are going to provide you with some tips on how to pick the best oil diffuser and the key considerations to make in your purchase. We will outline the pros and cons of these essential oil diffusers to make it easy for you to choose between what you like over what you do not like when buying them.

Choosing the best oil diffuser for your large room is pretty challenging, there are numerous options, so how do you get to choose the right one?

Below is the showcase of our top 10 best essential oil diffusers.

Review of the 10 Best Oil Diffusers For Large Room

  1. Asakuki 400ml essential oil diffuser (check price) EDITOR’S CHOICE
  2. Aromacare 600ml essential oil diffuser for large room (check price) EDITOR’S CHOICE
  3. Asakuki 700ml premium, essential oil diffuser (check price) EDITOR’S CHOICE
  4. 1500ml aroma essential oil diffuser large (check price) EDITOR’S CHOICE

Asakuki 400ml Essential Oil Diffuser

The Asakuki 400ml essential oil diffuser is a great deal for you if you are looking for a diffuser to place in your large room. This diffuser can run up to 12 hours with its 400ml large water tank, its ideal for rooms with 200 square feet and above. It is an ultrasonic essential oil diffuser that features seven different LED colors, multiple mist diffuse modes.

Is this essential oil diffuser safe for your use? Yes, it has a safety auto-switch that prevents it from overheating; in any case, it runs out of water. Its LED light color options give you full control to set the mood, and they can cycle in several different colors, increasing the aesthetic value of the unit.

This essential oil diffuser works with your favorite aroma oils to keep your mood relaxed, relieve your stress and anxiety, promote your deeper sleep, and generally create a calm and peaceful atmosphere for you and your family. Furthermore, this essential oil diffuser comes with a one-year warranty in general, thus guaranteeing you good performance and value for your money.

1 ASAKUKI 400ml Essential Oil Diffuser with 6 Bottles 10ml Pure Natural Essential Oils, 7 LED Color Changing Light and Auto Shut-Off - for Home, Office, Spa, Study, Gym

What we like about it

  • Its safety mode of auto-shutoff.
  • It comes with a warranty.
  • It does not make any noise.
  • The amount of water it holds can last for the whole night or day.

What we do not like about it

  • Some users have had quality issues

Everlasting Comfort Diffuser For Essential Oils (400ml)

The Everlasting comfort diffuser for essential oils (400ml) has a beautiful wood design and a large capacity to provide you with a relaxing scent for more than 13 hours. It comes in a decorative design in light wood or dark wood. This essential oil diffuser maintains a large capacity while it keeps its fixability as it is small and can fit anywhere you choose.  It is equipped with a built-in timer that allows you to tailor your experience by setting its timer to enjoy a continuous relaxing moment. This essential oil diffuser also has a safety auto-shutoff function that automatically turns it off when it detects a low water level. It also features seven LED lights to set the mood of your choice, and the lights can also be turned off completely if you do not like colors.

Furthermore, every light has a low and high setting for personalization. Has a powerful output of 50ml/ hr. The Everlasting comfort diffuser for essential oils (400ml)  is built to stand the test of time as well as made of high-quality bisphenol free plastic to provide you and your family with safe mist.  The power cord and all its electrical components are ETL certified to ensure safety, quality, and reliability. Besides, its operation is noiseless, thus providing you with a peaceful, quiet, and serene environment.

2 Everlasting Comfort Diffuser for Essential Oils (400ml) - Super High Aroma Output with Cleaning Kit - ETL Certified - Light Wood

What we like about

  • Its beautiful wood designs.
  • High-quality diffuser
  • Its compactness for large capacity diffuser
  • Its powerful output

What we do not like about it

  • Its capacity is not the largest.

Aromatherapy Essential Oil Diffuser 550ml 

If you are looking for an essential oil diffuser 500ml and above, the Aromatherapy essential oil diffuser 550ml  is an ideal choice to pick. This essential oil diffuser is ideal for apartments, offices, studio, and children’s rooms. It offers you’re a long time of service up to more than 10 hours and has a maximum output of 55ml/h.

it has mood lights that allow you to set your mood by changing the lights to whatever you feel at any moment. It also has an auto shut-off when the water level is very low. This essential oil diffuser features an advanced ultrasonic diffusing technology to generate the vapor without heat, thus preserving the integrity of the essential oil.

It is also super quiet and ideal for you if you do not like noisy environments. The diffuser is also very sleek and elegant, and it is made of plastic with a faux wood look. It is BPA free and blends naturally with most of your home décor.

3 Aromatherapy Essential Oil Diffuser 550ml 12 Hours Wood Grain Aroma Diffuser with Timer Cool Mist Humidifier for Large Room, Home, Baby Bedroom, Waterless Auto Shut-Off, 7 Co

What we like about it

  • It is easy to use and assemble.
  • Its water tank lasts long.
  • Unique design.
  • It makes little to no noise.

What we do not like about it

  • Some users have had issues with their performance.


The Innogear aromatherapy essential oil diffuser feature the latest ultrasonic technology that breaks up the essential oil into microparticles. This technology enhances the diffusion process and preserves the benefits of these oils as they are not heated. It has a natural plastic wood look with a touch of Zen-style to fit your workspace home.

You can control the mist output by switching between high and low mist to extend the duration of working hours. It also features an auto shut-off function that switches off when the water in the tank runs low. Is this essential oil diffuser safe for babies? The Innogear aromatherapy wood grain ultrasonic cool mist diffusers made of a material that is safe for babies and everyone in the house. The diffuser also features mood lights for you to set your favorite mood at any moment, as well as four-time setting modes.

4 InnoGear Aromatherapy Essential Oil Diffuser Wood Grain Ultrasonic Cool Mist Diffusers with 7 Color LED Lights Waterless Auto Shut-Off, 500ml, Yellow

What we like about it

  • Its great look wood grain design.
  • Its advanced technology.
  • It is easy to clean.
  • It is easy to use.

What we do not like about it

  • Not the quietest.
  • It cannot operate with the lights off.

Purasense Ultrasonic Aromatherapy Essential Oil Diffuser

This essential oil diffuser comes with a large capacity of 550ml to last you for long up to over 10 hours. It has an elegant South pacific wood carving inspired design to add a natural and harmonious element in your room or office. Besides, using it as a diffuser, its elegant design can be a decoration for your house.

The Purasense ultrasonic aromatherapy essential oil diffuser features mood lights that provide you with flexibility in where you put your diffuser as well as creativity. It also features a waterless auto-off function, and this essential oil diffuser will turn off automatically when the water runs out for the safety and protection of itself. It also offers you an experience of the purity of your oils without any contamination as it preserves the natural benefits of your essential oil by diffusing them without heat.

It features four setting modes that allow you to select what you want and enjoy the relaxation. This diffuser has advanced ultrasonic technology, and it is super quiet, which allows you to enjoy your sleep or reading. Furthermore, it comes with a one-year warranty and 45 days money back a backup.

5 PuraSense Ultrasonic Aromatherapy Essential Oil Diffuser, 550ml Cool Mist Humidifier with Color LED Lights Changing and Waterless Auto Shut-off for Office Home Bedroom Liv

What we like about it

  • Very useful waterless auto function.
  • Its customization capabilities.
  • Its sleek design.
  • Last long time.

What we do not like about it

  • There are sometimes quality issues with some functions not working well.

Azromacare 600ml Essential Oil Diffuser For Large Room

If you are looking for an essential oil diffuser to last you long hours of operation, this one is an ideal choice for you. The Aromacare 600ml essential oil diffuser for a large room runs 12-18 hours. It has a large capacity than most of the essential oil diffusers in the market. It has a luxury natural finest wood look design and warm, soothing yellow light that is perfect for your home and office décor.

Its operation is simple and very easy to use as well as it is a safe diffuser to use with its auto shut off function when water runs out. It does heat your essential oil; hence it keeps the beneficial properties of the aromatherapy oil. It is a decent oil diffuser with two mist settings that allows you to increase the diffusion for larger spaces. Besides, Aromacare 600ml essential oil diffuser for a large room is made up of quality material that is BPA free.

6 Aromacare 600ml Essential Oil Diffuser for Large Room, Aroma Diffuser for Essential OilsCool Mist Humidifier for Aromatherapy,Extra Large for Large Room,Dark Wood Grain,Las

What we like about it

  • Its large capacity.
  • It is BPA free.
  • Very efficient for large rooms.
  • Its simplicity to operate

What we do not like about it

  • Its design is not the most attractive.

Asakuki 700ml Premium, Essential Oil Diffuser

Asakuki 700ml premium, essential oil diffuser is an amazing multifunction aromatherapy gadget featuring a large and easy to clean 700ml water tank. This essential oil diffuser is equipped with seven different LED light colors and multiple mist diffuse modes. The capacity for this diffuser is a lot bigger compared to other diffusers in the list, which assures you long working hours and a long time of your relaxation moment. Its design is a sleek square design.

The device is fitted with a safety auto-switch that prevents it from overheating when it runs out of water. It is built of ultra-high grade, safe, and eco-friendly PP materials that baby bottles are made from, thus making it safe for your baby. This large capacity 700ml essential oil diffuser has a super powerful vibration motor that sprays and ensures enough mist in a large room.

If you have a big room like a master bedroom and living rooms, then this is a good choice to go for. It has three continuous timers and two levels of quiet ultrasonic mist function. It also allows you to switch off the mood lights if you are not interested in the lights as well as it is noiseless, thus giving you a peaceful sleep time and environment.

7 ASAKUKI 700ml Premium, Essential Oil Diffuser, 5 in 1 Ultrasonic Aromatherapy Fragrant Oil Vaporizer Humidifier, Timer and Auto-Off Safety Switch, 7 LED Light Colors

What we like about it

  • It is easy to clean its tank.
  • Its auto safety function.
  • Its sufficient large capacity.
  • Very ideal for a large room.

What we do not like about it

  • Its WI-FI may fails to work.

Urpower 700ml Square Aromatherapy Essential Oil Diffuser

If you love having a square diffuser, then Urpower 700ml square aromatherapy essential oil diffuser is an awesome pick for you. It has a unique square design with a modern feeling. This essential oil diffuser also has a large capacity to last you all night. Furthermore, it has an auto-shutoff function that shuts it down when it runs out of water. You do not have to worry about it getting burnt because this auto shut-off will automatically switch the diffuser off when the water level is low.

Its unique square design and its LED light bring out a fantastic combination of an asset to fit in your house and office perfectly. It also features time three-time settings to choose from. It also makes your room look more fashionable with its modern square shape of diffusers. The device is noiseless, and you do not need to worry about your sleep because it provides a serene environment for you.

8 URPOWER 700ml Square Aromatherapy Essential Oil Diffuser Humidifier Large Capacity Modern Ultrasonic Aroma Diffusers Running 20+ Hours 7 Color Changing for Home Baby Bedroo

What we like about it

  • Its unique square shape.
  • Large capacity.
  • Long operation hours.
  • Easy to use and clean

What we do not like about it

  • Issues of the device stopped working for some users.

1500ml Aroma Essential Oil Diffuser Large

This essential oil diffuser has a super large capacity that can run overnight, and there is no need to refill water as often as using other smaller capacity oil diffusers. It features a whisper-quiet design for interruption-free working and sleeping. It is an ideal essential oil diffuser for your large room with its capacity and high output.

It is designed to air rooms up to 325 square feet, and aromatherapy scent covers an area up to 450 square feet. It is a very simple and easy to use an oil diffuser, by simply adding a few drops of your favorite essential oils to the tank the room will be filled with fabulous aroma. It is equipped with ultrasonic technology, which helps it to produce less than 35dB of noise, thus making it ideal for night and times you do not want noise.

It has five adjustable mist settings with a knob 270-degree rotation to set the mist levels. You do not have to worry about forgetting to turn it off, and it is fitted with an auto-shutoff function that enables it to switch off automatically when water runs out. It is built of materials that are friendly to the environment and BPA free. It also features seven visually appealing colors switchable LED lights.

9 1500ml Aroma Essential Oil Diffuser Large - Exqline Diffuser for Essential Oils Large Room Large Aromatherapy Diffuser Large Room Diffuser Humidifier Unique Diffusers for Ess

What we like about it

  • Efficient for large rooms.
  • It is easy to use.
  • Its large capacity.
  • It is noiseless for a larger diffuser.
  • It requires less refilling.

What we do not like about it

  • Its design is unattractive.
  • Its water float level can malfunction.

Pure Enrichment Purespa Xl

The Pure Enrichment PureSpa XL has a powerful mist output and a large capacity tank of 2000ml that hold enough water to last you for long.  It is the perfect essential oil diffuser for large rooms like bedrooms and living rooms or any other larger room. It features mood lights with a color choice technology than enhances the ambiance with soft glow lighting that either rotates between colors or choose your favorite color.

Pure Enrichment PureSpa XL comes with an ETL-approved power adaptor and a user manual to guide you on how to use the device as well as a Pure Enrichment’s guaranteed five years warranty. This essential oil diffuser naturally freshens any room with low or high mist settings. It has a powerful output that can run up to 50 hours on the low output and up to 22 hours on the high output. If you do not want the lights, you can turn them off, and it will operate with the lights off. It has the biggest capacity so far among the diffusers in our list, which gives you an excellent experience of usage with this essential oil diffuser.

10 Pure Enrichment PureSpa XL - 2L Ultrasonic Cool Mist Humidifier + Essential Oil Diffuser, Powerful Mist Coverage Up to 350 sq ft for 50 Hrs, Soft Color-Changing Lights, Qu

What we like about it

  • Its large capacity of 2000ml.
  • Deliberately meant for the large rooms.
  • Its customization capabilities.
  • Very powerful.

What we do not like about it

  • It is not easy to use and operate.


Related Buyer’s Guide:

Factors To Look Into When Choosing An Essential Oil Diffuser For Your Big Room

Before jumping into picking any essential oil diffuser, there several aspects that you should consider that can help you get the best choice for you. These factors will also increase the chances of finding the perfect diffuser. You need to know what exactly you want as well as the functionality you are looking for in a device. Here is a bunch of aspects to consider when going for an essential oil diffuser:

  • Area Coverage

If you are going to use a diffuser in a larger room, you should buy a larger diffuser that is meant for bigger rooms as well as ensures there is enough oil in it to cover the entire room. Normally, a larger diffuser lasts longer because it can hold more water, which means you will not have to refill it frequently.

  • Operation simplicity

Buying a difficult to operate oil diffuser will only lead to disappointment. Make sure you have checked and read through the directions on the package and pay attention to the infographics there. This will help you know how its operability is, besides you can have a more sophisticated diffuser that has various settings to allow you to choose how many hours you want it to run.

  • Noise levels

If you are purchasing a diffuser to use it in an office or in a bedroom where you would want to a serene environment, it is very important to check its noise level. A quieter diffuser is the best option for you; otherwise, the noisier ones will be not fit for your preferences.

Our Recommendations And Conclusion

Eventually, buying a good diffuser for your big room will require you to come up with a preferential list of your problems so that when choosing, you go for what solves those problems. All of the essential oil diffusers we have reviewed are unique in their way, so which one to largely depends on your needs. It is not all about room coverage; there should be other aspects to consider when purchasing an essential oil diffuser for your large room. The model you choose should be highly dependent on your preferences and needs.  We have reviewed a variety of various oil diffusers here with their designs and functionality, have a look at our review list, and we hope will you decide on which one is appropriate for your large room.

Source: Safetyhub

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Lisa J. Thompson

Hello, my name is Lisa Thompson and I’m the Founder of Daily Home Insider, your go-to resource for all things home security and home improvement. In this day and age, security should be your top priority, and that’s exactly why my dedicated team of writers and I offer reliable information pertaining to gun storage, home safes, and so much more. When I’m not running the blog, I enjoy gardening and homesteading. As an avid nature lover, I also love going on camping trips. Currently, I happily reside in the heart of Los Angeles.
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