Best Essential Oil Diffuser For Large Space of 2021: Top 6 Picks

Last update: 2021-09-28

What is the best essential oil diffuser for large spaces? Is there any difference when considering it?

After we spent more than 150 hours researching essential oil diffusing, comparing 30 models side-by-side, and asking a renowned expert of indoor air improvement, here are the six top picks.

Here are the best essential oil diffusers for large space you can buy in 2021:

  • Quiet: BZseed Aromatherapy Essential Oil Diffuser
  • Easy To Set Up: HLS Essential Oil Large Room Diffuser
  • Decorative &Amp; Functional: Jack & Rose Diffusers
  • Best For Consistent Performance: BlueHills Premium 2000 ML XL Large Essential Oil Diffuser
  • Best For Kid’s Room: Homasy Essential Oil Diffuser
  • Best For Living Room: ARVIDSSON Ultrasonic Cool Mist Essential Oil Diffuser
6 Best Essential Oil Diffusers For Large Space
Quiet
BZseed Aromatherapy Essential Oil Diffuser
    Easy To Set Up
    HLS Essential Oil Large Room Diffuser
      Decorative &Amp; Functional
      Jack & Rose Diffusers
        Best For Consistent Performance
        BlueHills Premium 2000 ML XL Large Essential Oil Diffuser
          Best For Kid’s Room
          Homasy Essential Oil Diffuser
            Best For Living Room
            ARVIDSSON Ultrasonic Cool Mist Essential Oil Diffuser

              Quiet: BZseed Aromatherapy Essential Oil Diffuser

              BZseed Aromatherapy Essential Oil Diffuser
              BZseed Aromatherapy Essential Oil Diffuser
              9.8Outstanding
              Pros
              • Ultra-quiet - advanced ultrasonic diffusing technology
              • Practical and convenient – two mist settings, 8 lighting color options, dimmer function, and timer
              • Safe to use – waterless auto-shutoff features
              Cons
              • The water line-markings are hard to read
              • Wish there were no beep sounds

              This essential oil diffuser has all the features required for bedroom, workspace, or home studying room use, especially for operation noise levels.

              It highlights advanced ultrasonic diffusing technology that efficiently dampens operation sounds.

              For your information, its noise ranges are 28-31 decibels – equivalent to a whisper that perfectly works as white noise to boost deeper slumber. Insomnia people also find it easier to fall asleep in this calming sound.

              Just notice that when you change the mist setting, there are beep sounds.

              Some other practical add-ons of this essential oil diffuser are the 8 adjustable lighting colors with dimmer function, 3-setting timer, and waterless auto-shutoff.

              BZseed Aromatherapy Essential Oil Diffuser Specifications

              Dimension

              7.3 x 6.5 x 7.3 inches

              Vapor Amount

              55ml/h VS 30ml/h

              Runtime

              Weak mist: 10-12 hours

              Strong mist: 9-10 hours

              Covering Area

              Humidification: 150-200 square feet

              Aromatherapy: 425 - 500 square feet.

              Highlight Features

              advanced ultrasonic diffusing technology

              two mist settings, 8 lighting color options, dimmer function, and timer

              waterless auto-shutoff features

              Verdict

              By adopting advanced ultrasonic diffusing technology, the BZseed works only at 28-31 decibels, making it become the quietest option this year.

              Easy To Set Up: HLS Essential Oil Large Room Diffuser

              HLS Essential Oil Large Room Diffuser
              HLS Essential Oil Large Room Diffuser
              9.6Outstanding
              Pros
              • Convenient & Easy to set up – add a measuring cup and a set of 10 different essential oils in the package
              • Safe – made of BPA-free plastic
              Cons
              • The included essential oil bottles aren’t the best quality

              If you want an essential oil diffuser that is affordable and easy to set up, the HLS is a shining contender.

              It comes with everything needed in the package, including a measuring cup and a set of 10 different essential oils (aside from the aroma diffuser and its charger adaptor, of course). Inside the water tank, there is MAX line marking to let you know how much water should be added.

              The control panel has only two functional buttons and the manuals are straightforward.

              One thing that we do appreciate is, despite the low price, it doesn’t compromise the user’s health safety; the materials used on this atomizer are 100% BPA-free. A big bonus!

              HLS Essential Oil Large Room Diffuser Specifications

              Dimension

              17.76 x 7.72 x 6.73 inches

              Vapor Amount

              55ml/hour

              Runtime

              up to 10 hours

              Covering Area

              270-320 square feet

              Highlight Features

              add a measuring cup and a set of 10 different essential oils in the package

              made of BPA-free plastic

              Verdict

              The HLS Essential Oil Large Room Diffuser comes with everything needed for use right out of the box, making it a great pick for those who want something simple and easy to set up.

              Decorative &Amp; Functional: Jack & Rose Diffusers

              Jack & Rose Diffusers
              Jack & Rose Diffusers
              9Outstanding
              Pros
              • Look classy and modern – featuring a marble grain top, dark green vertically-striped mid-body, and shiny rose-gold metal rim
              • Compact and versatile – measured by 7.6 x 7.48 x 3.54 inches
              Cons
              • No fill line

              The design of this essential oil diffuser really wowed us!

              It looks so beautiful, classy, and modern for the price. The design includes a marble grain top and dark green vertically-striped mid-body, combining with glossy rose-gold metal rim, legs, and functional buttons. Particularly, the legs can be detached if you want.

              The compact size allows this atomizer to fit any space and easily becomes a nice decorative ornament.

              As for functionality, it packs a punch!

              Per full water tank, it can run continuously within 20 hours with three timing options: 1/3/6H. There are 7 color choices to choose from.

              Jack & Rose Diffusers Specifications

              Dimension

              7.6 x 7.48 x 3.54 inches

              Vapor Amount

              25ml/hour

              Runtime

              up to 20 hours

              Covering Area

              480 ft²

              Highlight Features

              feature a marble grain top, dark green vertically-striped mid-body, and shiny rose-gold metal rim

              measured by 7.6 x 7.48 x 3.54 inches

              Verdict

              The Jack & Rose Diffuser offers perfect conjunction of decoration value and functionality that can be displayed anywhere or used as a gift.

              Best For Consistent Performance: BlueHills Premium 2000 ML XL Large Essential Oil Diffuser

              BlueHills Premium 2000 ML XL Large Essential Oil Diffuser
              BlueHills Premium 2000 ML XL Large Essential Oil Diffuser
              9Outstanding
              Pros
              • Offer total runtime of 40 hours – feature a 2000ml water tank
              • Minimalist & modern – the stylized cylinder-shaped design with one control button
              Cons
              • Quite heavy

              The BlueHills Premium Essential Oil Diffuser works like a beast.

              It highlights a 2000ml water tank - which is 3x to 4x larger than other models in our article, therefore, its total runtime easily reaches 40 hours for more consistent performance.

              Despite the ultra-large tank, it doesn’t look rough or cumbersome thanks to the stylized cylinder-shape design. The construction is also minimalist; including one functional button for adjusting the mist settings and light color options.

              There’s no timer but you can rest assured to have it run overnight because the device is built with waterless auto-shutoff features.

              BlueHills Premium 2000 ML XL Large Essential Oil Diffuser Specifications

              Dimension

              13 x 7.4 x 7.4 inches

              Vapor Amount

              50ml/hour

              Runtime

              40 Hours

              Highlight Features

              feature a 2000ml water tank

              the stylized cylinder-shaped design with one control button

              Verdict

              Talking about the most consistent performer, we find the BlueHills Premium 2000 ML XL Large Essential Oil Diffuser has no rival.

              Best For Kid’s Room: Homasy Essential Oil Diffuser

              Homasy Essential Oil Diffuser
              Homasy Essential Oil Diffuser
              9.4Outstanding
              Pros
              • Kid-safe – made of BPA-free plastic & waterless auto-shutoff feature
              • No babysitting during use – three timing options & Sleep Mode
              • Run quietly & Not disturb kid’s sleep – feature ultrasonic technology
              Cons
              • No complaint

              There are three good reasons making the Homasy Essential Oil Diffuser a great pick for kid rooms.

              First off, it is extremely safe to use; the material is BPA-free, the device is built with waterless auto-shutoff, and the weight is light that kids can easily hold and move around with fewer risks of slipping off.

              Secondly, it works quietly thanks to the added Sleep Mode and the ultrasonic technology. You won’t worry that the noise operation of this aroma diffuser could wake your angel up.

              Thirdly, it has three timing options so that parents don’t have to babysit it. Another bonus is it has no colorful lighting, which will not trigger a kid's curiosity.

              Homasy Essential Oil Diffuser Specifications

              Dimension

              8.9 x 7.4 x 5.4 inches

              Vapor Amount

              25-62.5ml/hour

              Runtime

              12-20h in a low mist

              8-11h in high mist

              Covering Area

              480 square feet

              Highlight Features

              made of BPA-free plastic & waterless auto-shutoff feature

              three timing options & Sleep Mode

              feature ultrasonic technology

              Verdict

              In need of a safe, high-quality essential oil diffuser for your kid’s room? Try the Homasy!

              Best For Living Room: ARVIDSSON Ultrasonic Cool Mist Essential Oil Diffuser

              ARVIDSSON Ultrasonic Cool Mist Essential Oil Diffuser
              ARVIDSSON Ultrasonic Cool Mist Essential Oil Diffuser
              9Outstanding
              Pros
              • Speak out your characteristics and taste – the metal shell with finely engraved details
              • Reliable – ETL and FCC certified
              • Easy to use – the three-button control panel
              Cons
              • The mist isn’t really fine
              • The outer cover is not heavy-duty

              With finely engraved details plus breathtaking colorway, we believe this one-of-a-kind device will be a good conversation starter for you and your guests. Yeah, there is no perfect place for it other than the living room!

              Aside from appearance, this atomizer has a distinguishing control board that includes up to 3 three functional buttons: Power, Timer, and Light, which is easier to use.

              If you don't have the two-button or the single-button control panel as other aroma diffusers have because it requires many times pressing to adjust a certain function, this is a better choice to try.

              Speaking of safety, it is a rare aroma diffuser that passed all the durable and safety tests by ETL and FCC so you can feel peace of mind during use.

              ARVIDSSON Ultrasonic Cool Mist Essential Oil Diffuser Specifications

              Dimension

              8.5 x 8.35 x 6.69 inches

              Vapor Amount

              33-50ml/hour

              Runtime

              10-15 hours

              Highlight Features

              the metal shell with finely engraved details

              ETL and FCC certified

              the three-button control panel

              Verdict

              The ARVIDSSON Ultrasonic Cool Mist Essential Oil Diffuser is super-pretty, making it a nice decorative ornament in any vintage living room.

              How To Choose The Best Essential Oil Diffuser For Large Space?

              Water Tank Capacity

              To ensure the essential oil diffuser can diffuse oil and last long enough for a large space, you should choose a larger water tank. But how large should it be?

              According to our experts and experience, a 400-700ml water tank capacity is enough for an enclosure room of 250-450 square feet, depending on the mist setting and other factors. A 700-950ml water tank capacity is perfect for 450-500-square-foot space.

              If the room is open, you should increase the water tank capacity to 1000+ml.

              Waterless Auto-Shutoff Features

              No matter the space area that the diffuser works on, it should be safe and reliable.

              Here is a must-have safety feature you should consider. Auto shutoff – the way it works is when the water tank runs out, this feature is triggered to automatically turn the diffuser off, which avoids overheating.

              Timer

              To reduce babysitting, it is worthy to choose an essential oil diffuser built with a timer. The timing options depend on your needs.

              For example, for bedroom use, the timer should have an 8-hour setting.

              Which Brands Make The Best Essential Oil Diffuser For Large Space?

              BZseed

              BZseed provides many essential oil diffuser lines for large spaces. But what makes them stand out from other brands is quietness thanks to the advanced ultrasonic diffusing technology. Besides, their products meet all safety standards to work reliably.

              Jack & Rose

              Essential oil diffusers by Jack & Rose are not only well-made and powerful but also look beautiful. They’re ideal for people who are concerned about home interior decorating.

              Homasy

              We love Homasy’s essential oil diffuser lines for many good reasons. In addition to the brand reputation, the products are customizable, function well, and the customer service is great.

              FAQs

              What size oil diffuser do I need for a large room?

              The best oil diffuser size for a large room is 500+ml

              Do diffusers cool down a room?

              Yes, they do. In addition to diffusing essential oil into your room, diffusers release a lot of tiny water droplets, which helps increase the air humidity and cool down the room (as long as the space is airy).

              Do you need a bigger diffuser for a bigger room?

              Yes, you do. A basic rule of thumb is the bigger the room, the bigger the diffuser’s tank capacity should be.

              Is a diffuser bad for your lungs?

              It probably is. A diffuser can cause some bad issues on your lungs if you use it in a too-tight space for a too-long period of time. Or, you use poor-quality essential oils.

              Can I keep my diffuser on all night?

              No, you can’t. According to the well-known researchers we interviewed, keeping a diffuser on all night can increase your heart rate and blood pressure, make your skin and throat irritated, and cause headaches.

              Conclusion

              Many elements influence your decision on buying the best essential oil diffuser for large space, and we’ve just tested six of the top ones out there.

              You should read through our reviews and buying guides to get an idea of what to look for and how to consider each factor. Our team hopes that our hard work helped you easily narrow down your choices.

              Eugene Williams
              Eugene Williams

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