10 Best Essential Oil Diffuser For Large Room of December 2025

• 550ML CAPACITY, RUN OVER 10 HOURS, MORE MIST OUTPUT: Our essential oil diffuser feature 550ml capacity, even in strong mist mode still work for 9-10 hours, and weak mist runs for 10-12 hours, works well disseminating the aroma steam to your room. You can use this as an aroma diffuser and personal humidifier, ideal for apartments, office, studio, child’s room. This is real, rather than other brands claims 300ml capacity run for 10 hours.(VAPOR AMOUNT: 55ml/h VS 30ml/h)
• TIMER SETTING AND MIST CONTROL，WATERLESS AUTO-OFF: You can change the lights to whatever you feel at the moment, constant color or rotation of 7 colors, each light has bright and dim modes. Timer set in 1H/3H/6H/continuous on. When time is up or there is no water, the cool mist humidifier will turn off automatically, no risk of burns.
• REDUCE ALLERGIES SYMPTOMS IN WINTER DRY CLIMATE: This aromatherapy diffuser could provide a large amount of fresh air for those who suffer from Dry Cough, Itchy Nose or Eyes, Allergies Sinus Headaches, and Sleeping Problems, Dry Skin. Helps to improve breathing and sleeping, relieve allergy, reduce static electricity shocks in the dry climate. Add to cart now, great housewarming or hostess gift idea for yourself, parents, friends, business partners.
• ADVANCED ULTRASONIC DIFFUSING TECHNOLOGY, SUPER QUIET: Ultrasonic diffusers generate the vapor without any heat, which best preserves the integrity of the essential oil. Diffusers are better than any scented candle, you can even combine two or more essential oils to create a unique blend. The tiny bit of white noise you barely notice it, which may help you relax and sleep better but not obnoxious at all.
• SLEEK and ELEGANT LOOKING, LIFETIME CUSTOMER SERVICE: The aromatherapy essential oil diffuser is made of plastic with a faux wood look, BPA-Free water tank, fine design, and good quality, it blends naturally with the most home decor. We provide you 12-month replacement or refund if you are not satisfied.

BZseed

• Best Gift 5-IN-1 AROMATHERAPY DEVICE: This ultrasonic essential oil diffuser is an amazing multifunction aromatherapy device unlike any other you've ever used. It features a large and easy to clean 700ml water tank, multiple mist diffuse modes, as well as a safety auto-switch that prevents it from overheating in case it runs out of water.
• GREATLY IMPROVES LIVING SPACE: Besides its uses in aromatherapy, this essential oil diffuser also functions as a humidifier. Use it to improve your home's atmosphere quality, cover the smell of pets or smoking, and protect you family from excessively dry air, static electricity and more!
• PREMIUM QUALITY MATERIALS: When it comes to our premium essential oil diffusers, we make a point of using nothing but the same ultra-high grade, safe, and eco-friendly PP materials baby bottles are made from, as well as state-of-the-art production processes and strict quality control.
• A GREAT GIFT IDEA FOR EVERYONE: If you're in the market for a nice and practical gift, you can stop looking. This great aromatherapy essential oil diffuser is a thoughtful and handy present, one that everyone can benefit from. With a combination of style, design and function like that!
• 100% RISK FREE PURCHASE: At ASAKUKI, we have great faith in our essential oil diffusers. After all, we use them in our homes ourselves! Each one of them comes with a 1-year technical support. If you have any issue with your diffuser, do not hesitate to contact us - your satisfaction is paramount!

ASAKUKI

• 3 in 1 FUNCTIONS: Aromatherapy Diffuser, Humidifier, Night Light. PLEASE clean it at least once a week.
• ADVANCED Ultrasonic Diffusing technology which produces vibrations at a frequency of 2.4 millions times per second breaks water and essential oils into extremely fine micro-particles without using heat (heat alters and destroys the properties of essential oils). ULTRASONIC diffusing feature ensures the integrity of the essential oils' beneficial molecular structure and allows for ease of healthy bodily absorption.
• Large 500ml water capacity that can continue use up to 10 hours each time. When time is up or there is no water, it will turn off automatically. Press the "Mist" button, choose the timer from 60 mins, 120 mins, 180 mins or ON.
• Provides many benefits e.g. help to lift your mood and relieve stress, cover the smell of pets or smoking, protect you family from excessively dry room and more!
• Can be used as a humidifier. Provides moisture for dry room & dry skin. 45 Days Money Back and 12 Months Warranty.

URPOWER

• DIFFUSER WITH OILS SET: The set includes our most popular wood grain essential oil diffuser (500ml upgraded version) and top 6 100% pure essential oils. Lavender, tea tree, peppermint, eucalyptus, lemongrass, sweet orange essential oils go perfectly with ultrasonic oil diffuser to bring inviting, lively, and aromatic scent.
• LASTING ALL DAY: 500ml water capacity (enlarged water capacity with size unchanged) provides up to 15 hours running time continuously with no effort to refill. With large water tank, you are advised to add 10-15 drops of essential oils. This diffusers for essential oils is perfect for purifying air and creating a healthy and restful home or work area.
• 4 TIMERS: This essential oil diffuser with oils features with smart function. You can set the timer of on-1H-3H-6H, sit back and then work, study, clean, unwind, exercise, etc. High mist and low mist option for different situations.
• AUTO SHUT-OFF AND RELIABLE: The automatic shut-off design and BPA-Free material of aromatherapy diffuser always reassure you. 100% pure and natural essential oil sets are strictly steam distilled with no pollution. Perfect for air purification, home cleaning and more. Ultra-quiet 23dB for every tender aromatic night.
• DELICATE GIFT SET: Our essential oil diffuser with oils sets are your perfect gift choice for Valentine’s Day, birthday, for families, friends, teachers, beloved ones, and more. Show gratitude and care for people you love.

VicTsing

• PATENTED OIL FLOW SYSTEM -12 Hours of Consistent Scent & Aromatherapy with special OneFill technology. With one single fill (around 1.5ml / 30-40 drops), the scent will last 11-15 hours in low mode and 6-10 hours in high mode. You don’t need add oil constantly due to diminishing scent
• WHISPER QUIET - Designed on the base of the principle of hydrokinetics to operate below 30dB which will not affect your sleep or your work, with ABS + PP material, you can even put the diffuser in a baby’s room.
• SEGURO AUTO SHUT-OFF FUNCTION- The essential oil diffuser automatically shuts off in 5 seconds after running out of water as a safety feature. With the timer (1Hr/4Hrs/8Hrs) you can sleep without any worries.
• FINE & SMOOTH MIST - The ultrasonic technology delivers fine and stable cool mist which increases the air humidity without dampening your furniture or your floor. Accordingly to your room size, you can adjust the mist level between low and high modes by pressing the power button
• MODERN DESIGN - With its minimalist design and modern optics, the aromatherapy diffuser suits better with your room and makes a great and valuable gift for your friends and family.

Anjou

• PATENT-PENDING OIL FLOW SYSTEM: Propriety Singlefill technology delivers 12 hrs of everlasting scent from a single fill (1.5ml / 30-40 drops) up to 15 hrs in low mode, up to 10 hrs in high mode
• Beautifully Quiet: Ultrasonic technology gently emits therapeutic mist below 30dB so as not to disturb your sleep, study, work or relaxation
• Waterless Auto Shut-Off: Instinctively powers off in 5 seconds when the tank is empty; 3 convenient auto-off timer settings (1hr/4hrs/8hrs)
• Miracle Soothing Mist: Adapt the mist output according to your needs, add an enveloping vapor to purify and humidify any space
• One-of-a-Kind Gift: Express your love with Anjou’s home-enriching diffuser, stunning piece of décor is covered under a one year warranty; collapsible refilling cup included

Anjou

• 3-IN-1 – get an aromatherapy diffuser, new design 2019 no Condensation a night lamp and an air humidifier in 1 item that also serves well as an oil burner, air freshener, fragrance diffuser and the best treatment against tiredness;
• ENLARGED CAPACITY – our aroma essential oil diffuser has a waterless auto shut-off. Thanks to the high water capacity (530 ml) it runs up to 16h without refilling (producing 30-40 ml/h). 3 time modes: 2H/4H/8H;
• RELAX WITH 1 CLICK – create your own spa at home with our quiet & easy in use, ultrasonic oil wood grain diffuser. Control the mist direction of this power saving diffuser by rotating its top cover 360˚;
• WIDELY-USED – the urpower essential oil diffuser works as a natural aroma humidifier with different essential oils, emitting fresh scents to your bedroom, living room, office, etc;
• HIGH QUALITY – made of non-toxic and BPA-free raw materials, this ultrasonic cool mist humidifier serves you for a lifetime. If it’s not – a total refund is guaranteed.

Lilend

• COMPACT SIZE FOR SPACE-SAVING: Without occupying much space, you can easily place this palm sized diffuser on your desk, countertop, or pack in carry-on while on the go.
• 2 MISTING MODES: You can set it to intermittent mist (6-8 hrs working time) that diffuser mists and pauses every 30s, it goes for almost the whole night; Or set it to continuous mist (3-4 hrs working time) that keep misting until water runs out, it creates an instant fragrance in your room.
• PP MATERIAL AND COOL MIST: Using PP material, this diffuser disperses a comfortable stream of room-temperature mist, which provides ideal coverage for small or medium sized room.
• COLORFUL MOOD LIGHT: InnoGear essential oil diffuser has 8 soothing colors, light can switch from dim to bright. Great for creating atmosphere, meditation, or using as a night light.
• WATERLESS AUTO-OFF: You can enjoy a restful sleep and keep this diffuser on at night without worrying about overheating. The diffuser will automatically shut off once the water runs out.

InnoGear

• THE COMPLETE BUNDLE - Our Essence Diffuser has a 300 ml capacity and uses state of the art wave diffusion technology to atomize essential oils for ultimate wellness. The Essence diffuser includes 7 ambient light modes with two intensity settings for 14 different light combinations. It also includes 4 timer settings and a convenient auto shutoff feature for low water levels. Essence is made of BPA free plastic with a beautiful printed wood grain design.
• ANCIENT FORMULAS PROVEN RESULTS - Our oils are formulated using the highest quality plants, such as lavender from France, Indonesian Cumin and Roman Chamomile. Our oil blends mix specific ratios of our essential oils to create powerful effects on mind, body and overall well being. Our oils have no added fillers and absolutely zero additives. Simply add 6-8 drops into the water tank to add a light scent to any room.
• 10 ESSENTIAL PLANT OILS - Our Top 10 essential oils include lavender, eucalyptus, tea tree, orange, peppermint, lemongrass, jasmine, nutmeg, clove, and spearmint oils. All oils are therapeutic grade come in amber 10ml jars to protect from sun degradation
• NO ADDITIVES NO FILLERS - Absolutely zero cheap additives or fillers are used in creating our oils. We use local harvest (when possible).It takes longer but is better for the environment and creates a better essential oil. We employ a variety of extraction processes such as steam distillation and cold press depending on plant harvested.
• WHATS IN THE BOX – 1 300ml ultrasonic essence diffuser, 10ml lavender essential oil, 10ml eucalyptus essential oil, 10ml tea tree essential oil, 10ml orange essential oil, 10ml peppermint essential oil, 10ml lemongrass essential oil, 10ml jasmine essential oil, 10ml nutmeg essential oil, 10ml clove essential oil, 10ml spearmint essential oil, power cable, and manual.

Pure Daily Care

• PATENTED OIL FLOW SYSTEM -12 Hours of Consistent Scent & Aromatherapy with OneFill technology. With one single fill (around 1.5ml / 30-40 drops), the scent will last 11-15 hours in low mode and 6-10 hours in high mode. With other diffusers, oil must be added constantly due to diminishing scent
• WHISPER QUIET - Designed on the base of the principle of hydrokinetics to operate below 30dB which will not affect your sleep or your work
• AUTO SHUT-OFF FUNCTION- Automatically shuts off in 5 seconds after running out of water as a safety feature. You have the option to set timer (1Hr/4Hrs/8Hrs), and the diffuser will turn off accordingly
• FINE & SMOOTH MIST - The ultrasonic technology delivers fine and stable cool mist which increases the air humidity without dampening your furniture or your floor. Accordingly to your room size, you can adjust the mist level between low and high modes by pressing the power button
• STYLISH GIFT - With its minimalist design and modern optics, the aromatherapy diffuser makes a great and valuable gift for your friends and family.

Anjou