URPOWER® 300 mL Ultrasonic Essential Oil Diffuser Review

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Our Rating: 5 out of 5 stars

The URPOWER® 300 mL Aroma Essential Oil Diffuser and Ultrasonic Air Humidifier is a 5-in-1 blend of an aromatherapy diffuser, a humidifier, an air purifier, an ionizer and a glowing warm night light. Use without oils as a humidifier. As an ultrasonic essential oil diffuser, it will put a wonderful fragrance to enjoy with health benefits from the oils you select.

Features and Performance

The large sized diffuser has an automatic shut off and will run for 8 to 10 hours with the reservoir tank holding 300 mL (10.14 ounces) of water to cover about 450-square feet. The unit will not turn on again until you fill the tank with water. There are 3 fill line settings of 100 mL, 200 mL, and 300 mL (the maximum). Note: Add water to just below the Maxline. Less water provides more mist. The area of coverage for aromatherapy is 215-square feet (20 sq. m) and humidification coverage is 108-square feet (10 sq. m).

The URPOWER® ultrasonic diffusing technology produces 2.4 MHz vibrations at a frequency rate of 2.4 million times per second. This velocity breaks up the essential oils and water into micro particles using no heat that can destroy the integrity of the oils’ cell structure.

When you press the “mist” button you can set the 4 timer settings to run from 60-, 180-, or 360-minutes or turn to “on.”

LED lights—are long-life and have 7 colors. Press the “light” button to turn on the LED light for the color to change automatically. Press the “light” button again to fix at one color. Press the “light” button again to change colors. If you want to turn the unit off, please the button for three seconds until it is off.

Specifications and Exclusive Qualities

The ionizer puts negative ions into the air that are very beneficial and healthful to rid yourself of moodiness, anxiety, and overwhelming sadness. The 100% pure therapeutic grade essential oils (not included) remove tobacco odors, stuffy air, pet odors, and left over cooking smells.

Used without oils and just with water, the unit will be a mini humidifier improving the air with moisture for healthy breathing. The moisture will alleviate dry coughs, sinus congestions, dry skin, and dry hair.

Diffuser materials—are PP (Polypropylene) and ABS (Acrylonitrile Butadiene Styrene) and is BPA-free (Bisphenol A (BPA), an organic synthetic compound used in plastics. Everyone today wants to know that the plastic items they use are BPA-free and no wonder—the toxins are not good for anyone’s health. Be assured these diffusers are BPA-free with no toxins to worry about.

Maintenance—is quick and hassle-free. After you use your unit 5 to 6 times, first unplug the unit from the base. Fill the water reservoir with 17 ounces (500 mL) of water and one tablespoon of citric acid (sour salt) or two tablespoons of distilled (white) vinegar. Use a cotton swab to clean after letting the mixture soak 5 to 10 minutes. Pour out the solution being careful not to let it get into the air outlet hole on the side. Never submerge the unit in water. Allow the unit to air dry or use a paper towel to dry it inside and out. Mildew and bacteria will grow in your diffuser if you let water sit inside for days and weeks. Always leave it clean and dry when not in use.

Important Details

  • Dimensions: 4.3” x 6.1” (110 x 54 mm)
  • Weight: 11.1-ounces (315 grams)
  • Power Output: A/C 110/240-Volts, 50/60 Hz (European usage), D/C 24-Volts 600 mA
  • Power Cord: 5.5-feet (170 cm)

Here’s what you get in the box

  • URPOWER® 300 mL Ultrasonic Essential Oil Diffuser
  • A/C Power Adapter
  • Water Measuring Cup
  • User’s Manual
  • Warranty Card


The atomizer is shifted to the side so that you can direct the mist where you want it rather than coming out of the middle top. Be sure you align the lid over the base using the arrows until it clicks into place. Do this before adding water to check this function for when you do add water. The unit will remind you of a big pillar candle and is lovely to watch the colors transition from one to another.

Melissa Styer

Melissa Styer is the Founder, and long time Editor-in-Chief of WellnessAppliances.com. With a Bachelor of Science Degree from the University of Oregon, and a Masters Degree in Biology from California State University, Melissa has been writing and teaching about essential oils and the importance of a maintaining a healthy living environment for over 25 years. === Hi All, I started Wellness Appliances in the Winter of 2014 as a way to and share my knowledge and thoughts on essential oils and the importance of healthful living. As a youngster, I have vivid memories of walking through the large fantastic garden my dad kept for his entire life. It was there I learned about all the plants and the varied, important properties they can offer humanity. A cool morning misty walk down the meandering paths was a child’s delight, and something I still do to this day in my own sprawling gardens. While I have stepped back from the day-to-day managing of Wellness Appliances, I intend to continue contributing articles on subjects that matter to me from time to time. My days are largely filled volunteering at the local co-op, tooling in my vegetable and fragrance gardens (which I attempt to keep as a year-round gardens), writing, and being the leader of the pack to my two dogs Jacko and Lea. Thanks for the years of great readership! - Melissa

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