Our Top Picks
Best Overall: VicTsing Cool Mist Essential Oil Diffuser at Amazon
"It comes in three faux wood finishes, and it features two mist settings and 15 lighting modes."
Runner-Up, Best Overall: InnoGear Essential Oil Diffuser at Amazon
"The InnoGear Essential Oil Diffuser can run for three to four hours on continuous or six to eight hours on intermittent mode."
Best Lighted: URPOWER Aroma Essential Oil Diffuser at Amazon
"This model features seven soothing colors that you can cycle through, as well as a large tank that can run for up to eight hours."
Best Budget: Better Homes & Gardens Oil Diffuser at Walmart
"It adds humidity to the air with its cool mist and features a color-changing LED light for ambiance."
Best Design: Jasmine Aroma Diffuser at Bed Bath & Beyond
"The Jasmine Aroma Diffuser boasts both continuous and intermittent settings, and it can run for up to 24 hours in interval mode."
Best Splurge: Vitruvi Stone Diffuser at Nordstrom
"This oil diffuser has a 90-milliliter water tank, and its simple, stylish design will blend right in with your decor."
Best Waterless: Omini Home Waterless Essential Oil Diffuser at Amazon
"The Omini Home uses cold diffusion technology to turn essential oils into a fine vapour—no heat or water necessary."
Best for Large Spaces: Exqline Aroma Essential Oil Diffuser at Amazon
"It's powerful enough to diffuse scents over 450 square feet, and it has a large water tank for long-lasting operation."
Best for Car: InnoGear USB Oil Diffuser at Amazon
"This portable essential oil diffuser from InnoGear is designed especially for cars and fits right into your cup holder."
01 of 09
Best Overall: VicTsing 300ml Cool Mist Essential Oil Diffuser
The VicTsing Essential Oil Diffuser is stylish, affordable, and effective, making it one of the best options on the market today. It comes in three faux wood finishes, and it features two mist settings and 15 lighting modes.
This aroma diffuser can hold up to 300 milliliters of water and will last up to 10 hours on its lower setting. The mist output is 50 to 70 milliliters per hour, which is perfect for smaller spaces of up to 300 square feet. The diffuser has seven soothing colors and bright or dim options for each, and there are four timer settings—1 hour, 3 hours, 6 hours, or continuous.
Plus, the unit has an auto-off function that shuts it down when it runs out of water. Reviewers say the VicTsing Essential Oil Diffuser is contemporary and elegant, and the vast majority are impressed at how well it can diffuse scents.
02 of 09
Runner-Up, Best Overall: InnoGear Aromatherapy Essential Oil Diffuser
If the wood finish of our top pick isn’t your style, you also can’t go wrong with the InnoGear Aromatherapy Essential Oil Diffuser, which has a simpler look. This top-rated ultrasonic model has a smaller 100-milliliter capacity, as well as seven light colors.
The InnoGear Essential Oil Diffuser can run for three to four hours on continuous or six to eight hours on intermittent mode. Each of the seven light colors can be set to bright or dim, and the unit automatically shuts off when it runs out of water. The unit operates silently, and reviewers call it “small but mighty,” writing that it’s easy to use and surprisingly powerful.
03 of 09
Best Lighted: URPOWER 300ml Aroma Essential Oil Diffuser
You can experience soothing scents and gentle light with the URPOWER Aroma Essential Oil Diffuser. This model features seven soothing colors that you can cycle through, as well as a 300-milliliter water tank that can run for up to eight hours per fill.
This essential oil diffuser is best for rooms up to 200 square feet, and it has four timer settings—60 minutes, 180 minutes, 360 minutes, or continuous. You can choose to have it cycle through its colors or select one fixed color, and happy buyers say the light is soothing and improves the ambiance of the room.
04 of 09
Best Budget: Better Homes & Gardens Ultrasonic Aroma Diffuser
One of the great things about essential oil diffusers is that they’re quite affordable, and we love the appearance of this budget-friendly Ultrasonic Aroma Diffuser from Better Homes & Gardens. This model has a 100-milliliter capacity that lasts for up to four hours, and it's surprisingly stylish with its Moroccan scroll-inspired exterior.
This aroma diffuser adds humidity to the air with its cool mist, and it features a color-changing LED light for ambiance. Reviewers rave about the performance of the Better Home & Garden Aroma Diffuser, saying it’s “the coolest thing ever” and will match virtually any decor. Plus, you can’t beat the affordable price.Continue to 5 of 9 below.
05 of 09
Best Design: Stadler Form Jasmine Aroma Diffuser
This battery-powered aroma diffuser makes a chic addition to any room. The Stadler Form Jasmine Aroma Diffuser boasts both continuous and intermittent settings, and it can run for up to 24 hours in interval mode. It’s small and lightweight, and this product comes in several pretty colors.
The tank on this diffuser is 100 milliliters, and you can charge it via a USB cord. Reviewers say it’s a great option to put in your bedroom or office, and many note the design is much sleeker than other oil diffusers.
06 of 09
Best Splurge: Vitruvi Stone Diffuser
If you’re looking for a stylish, reliable diffuser and don’t mind spending a little extra, the Vitruvi Stone Diffuser is definitely the way to go. This beautiful model is made from porcelain, and it can run for three hours on continuous or more than seven hours on intermittent mode.
This oil diffuser has a 90-milliliter water tank, and the simple, stylish design will blend right in with your decor. It’s incredibly easy to use, and it’s ideal for rooms up to 538 square feet. It will automatically turn off when it runs out of water, and according to reviewers, the Vitruvi Stone Diffuser is elegant and well-made.
07 of 09
Best Waterless: Omini Home Waterless Essential Oil Diffuser
Don’t want to be constantly refilling the water tank of an oil diffuser? Then you need a waterless model, such as this one from Omini Home. This wireless essential oil diffuser uses cold diffusion technology to turn essential oils into a fine vapor—no heat or water necessary.
To use this oil diffuser, you simply charge up the reusable battery, put 10 milliliters of essential oil into the tank, and turn it on. It can run for up to 50 hours per fill, and the battery lasts for around 80 hours. Because this model is battery-powered, you’re not limited by a power cord, so it’s perfect for use in the car or office. However, keep in mind that the scent of the oils will be stronger without water.
08 of 09
Best for Large Spaces: Exqline Aroma Essential Oil Diffuser
Small essential oil diffusers are really only useful in one room, but if you have an open floor plan or other large space, you need a model like the Exqline Aroma Essential Oil Diffuser. Not only is this product powerful enough to diffuse scents over 450 square feet, but it also has a large ½-gallon water tank that delivers long-lasting operation.
This essential oil diffuser doubles as a humidifier, and it can run for 10 to 20 hours per fill. It has seven light options, including bright and dim settings, and you can adjust the humidity level to suit your needs. Plus, the operation is virtually silent, making it ideal for use in your bedroom at night.
Reviewers absolutely love this essential oil diffuser from Exqline, writing that it lasts for quite a long time per fill and looks extremely attractive. Many also love that it serves as a humidifier, helping to combat dry skin and other common issues in the winter.Continue to 9 of 9 below.
09 of 09
Best for Car: InnoGear USB Car Essential Oil Diffuser
If you’ve ever wished you could make your car smell a little better with the help of essential oils, you’re in luck! This portable essential oil diffuser from InnoGear is designed especially for cars—it fits right into your cup holder and can be powered via a USB cord plugged into your car’s auxiliary power outlet (you will need a compatible adapter, but they’re inexpensive).
This oil diffuser comes in white and black, and its small 50-milliliter water tank lasts about three hours on continuous mode and six hours on intermittent. It lights up in seven colors, and the unit will automatically shut off when it runs out of water. Reviewers say it’s an amazing car diffuser, as it fits perfectly into a cup holder. Plus, it’s quite affordable—a small price to pay for a better smelling vehicle.
Products Tested by The Spruce
How We Tested
We bought four top-rated oil diffusers that our reviewers tested for 118 hours. We asked our testers to consider the most important features when using these diffusers, from their design to their capacity. We’ve outlined the key takeaways here so that you, too, know what to look for when shopping.
What to Look for in an Oil Diffuser
Type There are two main types of oil diffusers: ultrasonic and nebulizing. Both versions create a fine mist, but they work a bit differently. Ultrasonic models — the cheaper option — create vibrations that break the essential oils down and distribute the individual molecules into the air. Nebulizing models distribute more potent, undiluted essential oils into the air using pressurized air.
Capacity and time Ultrasonic models require a mixture of water and essential oils, which allows them to run for longer — approximately 30 to 60 minutes at a time. Since nebulizing models use only essential oil, they should be run for shorter periods (about 10 minutes at a time).
Cleaning Both types of models benefit from regular cleaning, but ultrasonic essential oil diffusers are more difficult to clean since they use both water and essential oils. Water makes the machine more susceptible to mold, and tap water can leave calcium deposits inside the machine.
Test Results: VicTsing 300ml Cool Mist Essential Oil Diffuser (Best Overall)
Available in three different colors
Large water tank ensures six to ten hours of use
Ability to control colored LED lights
Lid doesn’t lock
“I have bad sinuses that dry out, especially in the winter when the heat is on, and this diffuser has helped relieve some of my usual dry sinus issues,” raved one of our testers. One of our reviewers, who used the diffuser in her office, said the aroma was particularly pleasant and carried well, prompting others to stop by and comment on the good smell. Our testers also liked that it can be set to run for a specific time period. In terms of negatives, our reviewers wished for a cordless option and also mentioned the lid doesn’t lock so it’s easy to knock over the diffuser and spill water.
Test Results: InnoGear Aromatherapy Essential Oil Diffuser (Runner-Up, Best Overall)
Auto shut-off feature
Quiet in use
Powered only by an outlet
Water tank is quite small
This oil diffuser won over our testers immediately with its design. “The wood this diffuser is made from is smooth to the touch and looks nice anywhere,” one reviewer said. She added, “It’s not too extravagant and not too plain.” The machine was also effective and quiet. “I didn’t hear the motor running at all, which is ideal,” noted one tester. Our reviewers’ only criticism was the fact that the diffuser could only be powered via an electrical outlet. “I’d love a battery or charged option,” one reviewer stated.
Test Results: URPOWER 300ml Aroma Essential Oil Diffuser (Best Lighted)
Can hold a lot of water
Multiple timer settings
Can't switch between misting settings
Our testers loved this URPOWER diffuser because it offers multiple settings and sells at an affordable price (usually below $20). "The custom timing settings, sturdy construction, easy-to-use features, and its ability to scent a large space make this a great choice for everyday aromatherapy needs," one reviewer said. The downsides of this diffuser are its short warranty and its inability to switch between continuous and intermittent misting.