InnoGear Essential Oil Diffuser MT-039 review

The InnoGear MT-039 is the cheapest way into ultrasonic diffusing on this list, with a list price of $19.99. It is a small plastic unit, 3.9 by 5.5 inches, with two mist modes: continuous until the water runs out, or a 30-second on and off cycle that InnoGear says lasts about 6 to 8 hours per fill. The mood light can cycle through colors, hold one, or turn off, and it works separately from the mist. A waterless auto-off stops it when the tank is dry, and InnoGear says all its products carry a 12-month warranty. The drawbacks are real. When we checked, the product was sold out on innogear.com and the page pointed buyers to Amazon, the page gives no coverage figure, and there is no timer. Reviews on InnoGear's own page are mostly positive but include reports of weak mist. For about $9 more at list, the ASAKUKI Dew Plus adds a 300 ml tank and a proper timer.

Who it is for

first-time buyers on the smallest budget

Price

$19.99 list price; sold out on innogear.com when checked, with a Buy at Amazon link.

Basic White Regular Price $19.99
Quoted from the vendor pricing page on November 13, 2026.

Key features

• Continuous mist or 30-second intermittent mode
• About 6 to 8 hours of intermittent mist per fill
• Color-cycling or fixed mood light that can be turned off
• Waterless auto-off
• Measures 3.9 by 5.5 inches

Strengths and weaknesses

• Strength: $19.99 is the lowest list price on this list
• Strength: Light and mist work independently
• Strength: All InnoGear products carry a 12-month warranty
• Weakness: Sold out on innogear.com when checked; the page links to Amazon instead
• Weakness: No published coverage figure on the product page
• Weakness: No timer beyond the two mist modes

Key facts

• Type: Ultrasonic
• Run time: About 6 to 8 hours intermittent
• Modes: Continuous or 30-second intermittent
• Size: 3.9 x 5.5 inches
• Warranty: 12 months

Where it ranks

InnoGear Essential Oil Diffuser MT-039 is No. 7 in our Best Essential Oil Diffusers verdict.