Why it matters
The Dreo DR-HHM001S Humidifier is an ultrasonic humidifier with a 4 liters tank, rated for 300 square feet.
Run time per fill, per the maker: 36 hours.
Aim for 40 to 60 percent relative humidity indoors: drier air irritates airways and skin, wetter air feeds dust mites and mold. Use distilled or demineralized water to avoid the white mineral dust ultrasonic mist leaves behind.
The listing names app control.
A full tank holds about 4.0 liters, which adds roughly 9 pounds of water to carry or lift to the sink and back.
Spread over 36 hours, that tank works out to about 111 milliliters an hour, the rate on the setting the run time was measured at; higher settings empty it faster.
Its tank of 4.0 liters is below the middle of the range we cover: 33 of the 78 humidifiers with a stated figure come in lower, and the range runs from 0.7 liters to 20.1 liters.
Its stated run time of 36 hours is below the middle of the range we cover: 32 of the 69 humidifiers with a stated figure come in lower, and the range runs from 10 hours to 130 hours.
Price-wise it sat in the middle third of the 74 ultrasonic models we cover when we checked; the button shows today's price.
It qualifies for our lists Best Humidifiers for Bedrooms, Best Cool Mist Humidifiers, Best Humidifiers for Babies and Nurseries, where it is ranked against every model that meets the same rule.
Compared with the Dreo HM311S Humidifier: power draw 25 watts here vs 26 watts.
Who it's for, and who should skip it
Good fit if
- Dry winter bedrooms
- Owners who will clean it weekly
Look elsewhere if
- Rooms far larger than its rating
Pros and cons
Pros
- 4 liters tank
- Runs 36 hours per fill
- Rated for 300 square feet
Cons
- Needs regular cleaning to stay hygienic
- Ultrasonic mist leaves white dust with hard water
Limitations to weigh
- The Dreo DR-HHM001S Humidifier listing states every figure we compare on; they are the seller's numbers, measured on the setting it chooses.
Specifications
The bracket shows where each figure comes from.
| Model number | DR-HHM001S Black | Retailer |
|---|---|---|
| Room coverage | 300 square feet | Retailer |
| Noise (seller) | 28 dB | Retailer |
| Wattage | 25 watts | Retailer |
| Capacity | 4 liters | Retailer |
| Run time per fill | 36 hours | Retailer |
Alternatives worth comparing
More room humidifiers we cover
- HoMedics UHE-CMTF91 Humidifier
- Vornado UH200 Ultrasonic Whole Room Humidifier (HU1-0069-43) $169.99
- Levoit Superior Studio Smart Evaporative Humidifier $139.99
- Coolfiqu LP-2113 Humidifier
- Dreo DR-HHM006 Humidifier
All room humidifiers, compared in one table · Every Dreo product we cover
Final verdict
A practical choice for dry winter bedrooms. Confirm the model it fits before ordering.
Where to buy
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