10 Reviews: Best Aroma Diffuser for Large Rooms (Apr 2024)

With a coverage area of 430 square feet, the URPOWER 1000ml essential oil diffuser is powerful enough to handle larger living rooms, and the 1-liter tank capacity allows it to run all night while you sleep. It can run for 10 to 15 hours on high-mist mode and 15 to 20 hours on low-mist mode before needing to be refilled. This powerful but whisper-quiet model not only diffuses essential oils but also functions as a humidifier and night light, assisting you in transforming your home into a peaceful and stress-relieving environment.

"This is such a nice diffuser. Quiet and diffuses well. I need to use more essential oil but I’m happy to do that for the length of time that it diffuses. It was easy to set up and I’m using it in a larger space which makes it ideal."

by Dawn Kincade

Small essential oil diffusers are fine for small rooms, but if you have an open floor plan or a large space, a model like the Exqline Aroma Essential Oil Diffuser may be better. This device can not only distribute scents over 450 square feet, but it also has a large 1500-milliliter water capacity for long-term use. This essential oil diffuser is also a humidifier, and each fill lasts 10 to 20 hours, making it ideal for your large space. It has seven different light settings, including bright and dim, and the humidity level can be adjusted to meet your needs. Furthermore, the operation is pretty much silent, making it suitable for use in your bedroom at night.

"I love this diffuser. I can't really say it works well as a humidifier, but it definitely works great for diffusing essential oils. It stays on for the entire day, and puts out a decent mist of scent; I like how you can control the mist level...."

by Shawn

The Sierra Modern Home 400ml essential oil diffuser is a WiFi-connected smart model that can be operated manually like any other diffuser or via the companion app. The smartphone app allows you to control the timer, scheduling, mist intensity and LED color. The device is also Alexa and Google Home compatible, allowing you to control it with your voice. The diffuser has a 400ml tank capacity and can run continuously for up to 12 hours. This ultrasonic model can also produce enough water vapor to humidify a large area.

"I LOVE this diffuser. I own a couple different diffusers and have one in each room in my apartment, so I’ve tried out a few different brands and this is by far my favorite. It’s got a cool sleek design, the subtle changing light on it adds to the ambiance of the room, and I love the WiFi capabilities and being able to run it from my phone. ..."

by Jerry

The aromatherapy essential oil diffuser can hold up to 500ml of water and emits approximately 30ml per hour, so you can leave it running for up to 20 hours and fill your home with essential oil fragrances. When the water runs out, the unit will automatically shut off as an added safety feature. An LED light with seven color options is also included, and when combined with the stylish metal exterior, it’s an attractive device that will complement the style of any room.

"It's pretty! I was going to use it as only a humidifier but brought some essential oils to try on it in the end. It's nice to wake up to a nice gentle fragrance in the morning! And it lasts longer than expected. Five stars"

by Iris

The BZseed 550ml diffuser is a stylish and powerful model that is capable of covering large rooms. It is ideal for moisturizing the dry winter air while also freshening it with your favorite essential oil blend. The 550ml tank capacity allows it to run for up to 12 hours on low mist mode and 10 hours on high mist mode. The BZseed 500ml diffuser has a timer that can be set to turn off after 1, 3, or 6 hours. Otherwise, if you leave it running continuously, it will turn off when the water runs out, so you don’t have to worry about it if you leave it running overnight.

"....Very quiet, looks decorative and nice not like a big white medical machine like other humidifiers. Helps with coughing, dry mouth, and just setting a tranquil mood. My kids love seeing the mist at the top. Easy to set up and use the timer or different light colors. Very nice!"

by Traci

This large essential oil diffuser has a 2200ml tank, which is roughly ten times the capacity of a standard aromatherapy diffuser. Because of its large capacity tank, it can scent and humidify a room for up to 40 hours without stopping. If you need to cover a large area but don’t want to keep refilling the tank, the BlueHills XL is a great diffuser for large spaces. The diffuser features a one-of-a-kind white woodgrain finish and a color-adjustable LED light. The mist intensity can be adjusted with a dial, and the unit has an auto shut-off feature to prevent overheating if the water runs out.

"..... It is roughly the size of a mugdoes supply large rooms with fragrance. You do not need to increase the amount of oil because of the 2 litre volume..... I love the fact that this device comes with an attached plug which can prevent device malfunction..."

by Basil Liksixty

If you want a diffuser that does the best job of dispersing a scent throughout your home and don’t mind paying a little more for a professional-grade model, the ArOmis diffuser is for you. The ArOmis nebulizer will quickly fill a large room with essential oils. It will quickly cover a large area of up to 900 square feet, and you can adjust the intensity using the dial on the base. The ArOmis disperses essential oils intermittently using a built-in 10 minute on, 10 minutes off function, and it will shut off automatically after 4 hours. The natural beech wood base and hand-blown glass tube make it an appealing gift option.

"This diffuser very quietly fills my entire open concept 800sqft apartment with the scent of essential oils in a matter of minutes. If I run it for longer it even travels down a hallway into my bedroom...."

by ElizabethD

Not only do you get a product that effortlessly diffuses, but you also get a humidifying feature and a nightlight feature. Because this product is extremely quiet, you won’t have to worry about the diffusing being distracting or excessively loud. Despite the fact that the tank is only 500 milliliters, you’ll get enough fragrance spread to fill a large space. This diffuser works best in your living room or basement, where it can easily fill the space with fragrance.

"... It is very quiet, like can not hear the motor and just occassionally some light bubbling. I also picked this one because it does not beep and turns off automatically when it runs out of water, so I don't have to worry about that..."

by Amazon Customer

This elegant Aroma Diffuser safely provides you with a peaceful aromatherapy experience at home while you relax with your favorite snack and listen to your favorite music. It is available in two different colors for your home decor: black and brown. Despite its small size, it can cover up to 320-540 sq. ft. which is perfect for large rooms. It is also completed within one to five hours of time. If you are looking for the best aroma diffuser for a large room, this one would be a great option with its 200 ml capacity, design, and features.

This essential oil diffuser is small and inoffensive, but it can fill an entire room with aroma. Because of its small size, it can be placed almost anywhere. The fan in this product is also extremely quiet, which contributes to the product’s stealthiness. This product has a 160-milliliter tank, which allows for a reasonable amount of diffusing time. This product has the capacity to fill a large room of up to 250 square feet. There is also a built-in timer that will turn the device off when the timer expires. There’s also an intensity setting that lets you control how much fragrance you get from your diffuser.

This diffuser works awesome! It's very easy to set up and use and works. When I turn it on before bed, it's still going by morning (although the scent is mostly gone by then, but that's the nature of essential oils not the diffuser)..."

by AZfox