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Dreo

Dreo HM717S Smart Humidifier: Can 8L of Warm & Cool Mist Really Cover 600ft² in 2026?

The Dreo HM717S delivers 80 hours of warm or cool mist across 600 sq ft with smart app control, all for under $100.

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Key Specifications

Coverage
600
Noise
28 – Quiet

Best For

How this humidifier scores for different use cases

Bedroom & Sleep
92/100

The 28dB noise level is excellent for sleep, and 80 hours of runtime means no midnight refills. Auto shut-off, night light, and warm mist add comfort for overnight use.

Large Room / Whole Home
90/100

600 sq ft coverage, 550 mL/h mist output, and 8L tank make this ideal for large rooms. The 40-inch tall mist column distributes moisture widely across open spaces.

Smart Home
88/100

WiFi control via the Dreo app, Alexa and Google Home compatibility, real-time monitoring, and scheduling make this a strong smart home humidifier. Only missing a dedicated remote control.

Nursery & Baby
78/100

Quiet 28dB operation and auto shut-off are great for nurseries. Cool mist mode is available, but no BPA-free certification is listed, which is important for baby safety.

Office & Desk
45/100

At nearly 7 lbs and 14 inches tall, this humidifier is too large for most desks. It is designed for floor placement in large rooms, not compact office use.

Travel & Portable
10/100

At 6.93 lbs with an 8L tank and AC power requirement, this is not portable or travel-friendly in any way. It is a stationary large-room unit.

Our Verdict

The Dreo HM717S packs serious power into a $100 humidifier. Its 8L tank delivers 80 hours of mist. You refill it less than once every three days.

Coverage reaches 600 sq ft with 550 mL/h output. That handles a large bedroom, living room, or open floor plan with ease.

You get both warm and cool mist. Warm mist reaches 133°F in 8 minutes. Cool mist works for daily comfort all year.

The Dreo app gives you real-time humidity data. You can set schedules and check reports from your phone. Alexa and Google Home voice control adds hands-free convenience.

At 28dB, this humidifier runs quieter than a whisper. You can sleep right next to it without disturbance. The night light adds a gentle glow for bedrooms.

Top-fill design and easy-clean construction make maintenance simple. The built-in humidistat keeps humidity within 5% of your target. Auto shut-off protects against dry-tank operation.

At $99.99, you get premium features that competitors charge $150 or more for. This is strong value for a large-room smart humidifier.

What We Like

  • 8L tank runs up to 80 hours on a single fill.
  • 550 mL/h mist output covers rooms up to 600 sq ft.
  • Both warm and cool mist modes for year-round comfort.
  • WiFi app control works with Alexa and Google Home.
  • 28dB quiet operation is softer than a whisper.

What Could Be Better

  • No BPA-free certification listed for baby safety.
  • No dedicated remote control included in the box.
  • No sleep mode feature for automatic dimming and quieting.
  • At nearly 7 lbs, it is heavy to move when full of water.
  • No essential oils tray is visible, only aroma pad diffusion.
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Standout Features

80-hour runtime with 8L tank
Most humidifiers in this price range offer 3-6L tanks with 30-50 hours of runtime.
550 mL/h mist output
Average humidifiers produce 250-350 mL/h. This unit outputs 57% more than average.
28dB noise level
The average humidifier runs at 35-40dB. At 28dB, this is quieter than a soft whisper.

Full Specifications

Humidification Performance

Coverage Area600

Noise & Comfort

Noise Level28 – Quiet

Physical & Dimensions

Weight6.93
Width12.01
Depth6.73
Height14.45

Features

Included Features

Auto Shut-Off
Cool Mist
Humidistat
Night Light
Quiet Operation
Timer
Top Fill
Warm Mist
WiFi Control

Not Included

Remote Control

Frequently Asked Questions

Common questions aboutDreo 8L Smart Humidifier Large Room 600ft², HM717S, 80H Runtime Supersized Warm and Cool Mist Humidifiers for Bedroom Baby, 28dB Quiet Air Humidifier for Plants Indoor, Home, Whole House, Silver

How long does the Dreo HM717S run on a full tank?

The 8-liter tank provides up to 80 hours of continuous mist on the lowest setting. On higher mist levels, runtime will be shorter.

Can this humidifier cover my whole house?

It covers up to 600 square feet, which works well for large bedrooms, living rooms, or open areas. For a whole house, you may need one unit per floor.

Does it work with Alexa and Google Home?

Yes. You can control it with voice commands through Alexa and Google Home. The Dreo app also lets you monitor humidity, set schedules, and view reports.

How loud is this humidifier?

It operates at 28dB, which is quieter than a whisper. You can comfortably run it overnight in a bedroom without it disturbing your sleep.

Can I use both warm and cool mist?

Yes. You can switch between warm mist, which reaches 133°F in 8 minutes, and cool mist for daily comfort. Both modes are built into the same unit.

Scores

Overall Score 88/100
Value Score 90/100
Popularity 82/100

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Scored 88/100 600 sq ft coverage

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