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This compact model is the most attractive diffuser we recommend, but its smaller tank doesn’t last as long and its stream of mist isn’t as powerful as our pick’s. It’s also far pricier.

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The Vitruvi Stone Diffuser is small but absolutely gorgeous. Unfortunately, this elegant diffuser has a tiny 90ml capacity and minimal settings. Depending on how you dilute your oils, you can still get pretty good coverage, it just won't be able to tackle your entire 2000 square foot house. Still, it filled our main tester's spacious living and dining room area with relative ease. Limited timer and light settings keep it simple to use and looking fly in the process. It's even uncomplicated to clean; simply run it for 30 minutes with a specified white vinegar mixture, and you're good to go. 
However, the Vitruvi will likely disappoint if you're looking for a rainbow of color options or a plethora of timers and mist settings. Its narrow band of light has only one color &#40;a peachy orange shade&#41; of a single brightness. And it offers only two usage settings with no option to just turn it ON and walk away. The ceramic stone top is also much easier to break, scratch, or even get fingerprinted than the plastic tops of most other diffusers we tested. And the cap on the reservoir has a pointy top where the mist escapes that needs to be carefully lined up with the hole in the ceramic cover. Still, we think it's a great addition to a single room where you can WOW your friends and family with its fresh looks and bouquet.
Includes: Diffuser, adapter, directions, 200 ml measuring cup

The Vitruvi Stone Diffuser is small but absolutely gorgeous. Unfortunately, this elegant diffuser has a tiny 90ml capacity and minimal settings. Depending on how you dilute your oils, you can still get pretty good coverage, it just won't be able to tackle your entire 2000-square-foot house. Still, it easily filled our main tester's spacious living and dining room area. Limited timer and light settings keep it simple to use and keep it looking fly in the process. It's even uncomplicated to clean; simply run it for 30 minutes with a specified white vinegar mixture, and you're good to go. 
However, the Vitruvi will likely disappoint if you're looking for a rainbow of color options or a plethora of timers and mist settings. Its narrow band of light has only one color &#40;a peachy orange shade&#41; of a single brightness. And it offers only two usage settings with no option to just turn it ON and walk away. The ceramic stone top is also much easier to break, scratch, or even get fingerprinted than the plastic tops of most other diffusers we tested. And the cap on the reservoir has a pointy top where the mist escapes that needs to be carefully lined up with the hole in the ceramic cover. Still, we think it's a great addition to a single room where you can WOW your friends and family with its fresh looks and bouquet.
Includes: Diffuser, adapter, directions, 200 ml measuring cup

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Vitruvi Porcelain Essential Oil Diffuser Review

We grew to love the InnoGear 200ml Woodgrain model during testing. This unassuming, moderately sized &#40;and priced&#41; aromatherapy diffuser keeps its smaller capacity wide and low, making it very difficult to knock over. Despite having a volume of less than half of many others, it still manages to pump out therapeutic mist for nearly as long. Its simple shape also makes it very easy to clean regularly without a huge hassle. Additionally, the woodgrain exterior with a thin light strip helps it to more easily blend into your decor without sticking out like a sore thumb.
We find it odd that the maximum fill line inside the tank is well under half its actual capacity. The actual capacity turned out to be around 500ml, but the directions clearly state not to exceed that lower fill line of just 200ml, for some reason. The only real complaint we have about this solid performer is that it beeps rather loudly when the timer shuts off, which isn't ideal for a bedroom at night. However, the InnoGear 200ml Woodgrain is an affordable diffuser that's great for accident-prone folks — this model is almost impossible to tip over.
Includes: Diffuser, adapter, directions

We grew to love the InnoGear 200ml Woodgrain model during testing. This unassuming, moderately sized &#40;and priced&#41; aromatherapy diffuser keeps its smaller capacity wide and low, making it very difficult to knock over. Despite having a volume of less than half of many others, it still manages to pump out therapeutic mist for nearly as long. Its simple shape also makes it easy to clean regularly without hassle. The woodgrain exterior with a thin light strip helps it more easily blend into your decor without sticking out like a sore thumb.
We find it odd that the maximum fill line inside the tank is well under half its actual capacity. The actual capacity turned out to be around 500ml, but the directions clearly state not to exceed that lower fill line of just 200ml, for some reason. The only real complaint we have about this solid performer is that it beeps rather loudly when the timer shuts off, which isn't ideal for a bedroom at night. However, the InnoGear 200ml Woodgrain is an affordable diffuser that's great for accident-prone folks — this model is almost impossible to tip over.
Includes: Diffuser, adapter, directions

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The Anjou 500ml is the answer if you're looking for subtlety and consistency. This teardrop-shaped aromatherapy diffuser comes with a unique oil tube inside to distribute essential oils more evenly over time. Most other models let the oil float on top, where it tends to be diffused first, initially packing a powerful punch but growing weaker the longer the unit runs. By adding your oils to the small glass tube inside, the Anjou evaporates a smaller but more consistent amount of oil throughout its exceptionally long run time. It may take longer before you smell it, but the delicate fragrance lasts longer than most others. It's also one of the few models with a visible difference between the high and low mist settings &mdash; many others appear identical in output. A thin light ring wraps around the base's middle, providing an understated accent color that won't blind you in your bedroom at night. 
However, this diffuser is rather large. The Anjou is enormous compared to others we tested with similar or even larger capacities. Be sure you like the look of whichever color or woodgrain you decide to purchase, as it isn't something easily tucked away out of sight. The inside portion of the lid also has a lot of very complicated surface area that makes it more challenging than most to clean when you want to swap between scents. And because it prioritizes a slower, more even use of oils, it does take longer to fill your space with that fresh scent. However, the Anjou is an excellent choice to keep your quarters pleasantly refreshing for hours on end if you're after consistency and don't mind the size of this centerpiece.
Includes: Diffuser, adapter, directions, small cleaning brush, extra essential oil tube

The Anjou 500ml is the answer if you're looking for subtlety and consistency. This teardrop-shaped aromatherapy diffuser has a unique oil tube inside to distribute essential oils more evenly over time. Most other models let the oil float on top, where it tends to be diffused first, initially packing a powerful punch but growing weaker the longer the unit runs. By adding your oils to the small glass tube inside, the Anjou evaporates a smaller but more consistent amount of oil throughout its exceptionally long run time. It may take longer before you smell it, but the delicate fragrance lasts longer than most others. It's also one of the few models with a visible difference between the high and low mist settings &mdash; many others appear identical in output. A thin light ring wraps around the base's middle, providing an understated accent color that won't blind you in your bedroom at night. 
However, this diffuser is rather large. The Anjou is enormous compared to others we tested with similar or even larger capacities. Be sure you like the look of whichever color or woodgrain you decide to purchase, as it isn't something easily tucked away out of sight. The lid's inside portion also has a complicated surface area, making it more challenging than most to clean when you want to swap between scents. And because it prioritizes a slower, more even use of oils, it does take longer to fill your space with that fresh scent. However, the Anjou is an excellent choice to keep your quarters pleasantly refreshing for hours on end if you're after consistency and don't mind the size of this centerpiece.
Includes: Diffuser, adapter, directions, small cleaning brush, extra essential oil tube

The Vivitest has more setting options but retains the aesthetic and performance of the Kumi and Vitruvi.

Diffuser Comparison