DREO 3L Ultrasonic Humidifier for Bedroom — 30H Runtime, 26 dB Quiet, 360° Nozzle

The DREO 3L Humidifier is a cool-mist, ultrasonic bedroom humidifier with a 3-liter top-fill tank that runs up to 30 hours at whisper-quiet 26 dB and delivers even moisture across rooms up to 300 sq ft.

Designed for bedrooms, nurseries, and living rooms, the DREO 3L Humidifier blends long runtime with low noise and adjustable mist to help reduce dry air discomfort. Its 360° rotating nozzle and 5μm ultrafine mist provide uniform coverage without wetting surfaces, while a built-in aroma tray adds optional scent for a calming atmosphere.

How long does the humidifier run and how do I refill it?

With a 3-liter water tank and an easy top-fill opening, this model supports up to 30 hours of operation in sleep mode depending on the mist level. Refilling is simple: lift the lid, pour water directly into the tank, and replace the cover—no disassembly required.

• 3.0 L top-fill reservoir for fewer refills
• Up to 30 hours runtime in low/sleep setting
• Quick refill process without removing the base
• Auto shutoff when water runs out for safety

Will it humidify my entire bedroom without making things damp?

The ultrasonic 2.4MHz atomization creates a 5μm ultrafine mist that disperses evenly and rises up to 40 inches, covering spaces up to about 300 sq ft. Because the droplets are very small, humidity increases without leaving wet puddles or harming wood surfaces when used correctly.

• 250 ml/hr maximum mist output for steady humidity
• 360° rotating nozzle to direct airflow where needed
• Effective coverage estimated for rooms up to 300 sq ft
• Fine 5μm mist avoids surface dampness under normal use

How quiet is it and can I use it at night with a baby?

The unit operates at a low 26 dB in sleep mode, making it suitable for bedrooms and nurseries where minimal sound is essential. An adjustable ambient light can be turned off to maintain darkness, and the quiet operation won’t disturb rest or light sleepers.

• 26 dB sleep-mode operation for minimal disturbance
• Optional ambient lighting with on/off control
• Sleep-friendly design made for nurseries and bedrooms
• Safe automatic shutoff when water is depleted

Can I add fragrance or essential oils and how do I control output?

The DREO 3L features an aroma pad tray so you can enjoy mild essential-oil scents alongside humidity without adding oils directly to the tank. Mist intensity is adjustable so you can select the right output for plants, skin comfort, or sleeping conditions.

• Dedicated aroma pad tray for gentle scent diffusion
• Multiple mist settings to match room needs
• 360° nozzle and adjustable output for targeted humidity
• Ultrasonic technology for silent, efficient atomization

Who is this for? The DREO 3L Humidifier fits households seeking long, quiet humidification for bedrooms, nurseries, or medium-sized living spaces. It's a practical choice for parents who want a low-noise unit with easy refills, people who keep indoor plants, or anyone looking for an unobtrusive cool-mist humidifier with optional aromatherapy features.

Features summary:

• 3L top-fill tank — up to 30 hours runtime
• 250 ml/hr mist output, 5μm ultrafine droplets
• 26 dB sleep mode and adjustable ambient lighting
• 360° rotating nozzle and aroma pad tray
• Automatic shutoff for safety