Dreo Smart Humidifier 747S vs Levoit Superior Studio 450S

The Levoit Superior Studio 450S and Dreo Smart Humidifier 747S have different core strengths. The Levoit is a more compact unit and will fit more comfortably in areas where space is at a premium. Moreover, the Levoit is considerably easier to wash, with several dishwasher-safe components and a water tank with fewer hard-to-reach corners. It also runs slightly more efficiently than the Dreo and can emit slightly more moisture at its highest setting. That said, the Dreo's water tank is more than twice the size, giving it a much longer runtime. The Levoit also has a fan to propel mist outward, unlike the fan-free ultrasonic Dreo, which makes it considerably louder than the latter.