Why it matters
The Dreo HM735S Humidifier is an ultrasonic humidifier with a 11 liters tank, rated for 700 square feet.
Run time per fill, per the maker: 100 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 11.0 liters, which adds roughly 24 pounds of water to carry or lift to the sink and back.
Spread over 100 hours, that tank works out to about 110 milliliters an hour, the rate on the setting the run time was measured at; higher settings empty it faster.
Its tank of 11.0 liters is one of the largest tanks we cover: 73 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 100 hours is one of the longest run times we cover: 66 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 dearest 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 Large Rooms, Best Cool Mist Humidifiers, where it is ranked against every model that meets the same rule.
Compared with the Dreo HM311S Humidifier: rated room size 700 square feet here vs 300 square feet; run time 100 hours here vs 36 hours.
Who it's for, and who should skip it
Good fit if
- Large living rooms and open plans
- Owners who will clean it weekly
Look elsewhere if
- Rooms far larger than its rating
Pros and cons
Pros
- 11 liters tank
- Runs 100 hours per fill
- Rated for 700 square feet
Cons
- Needs regular cleaning to stay hygienic
- Ultrasonic mist leaves white dust with hard water
Limitations to weigh
- Not stated on the Dreo HM735S Humidifier listing: power draw. Ask the seller or check the manual before relying on it.
Specifications
The bracket shows where each figure comes from.
| Model number | DR-HHM005S White | Retailer |
|---|---|---|
| Room coverage | 700 square feet | Retailer |
| Noise (seller) | 26 dB | Retailer |
| Filter type | Demineralization Cartridge | Retailer |
| Capacity | 11 liters | Retailer |
| Run time per fill | 100 hours | Retailer |
Alternatives worth comparing
More room humidifiers we cover
- Livatro LVHD3001W Humidifier
- AIRCARE Executive 5.7 Gal. Cool Mist Evaporative Whole House Humidifier $229.99
- HoMedics UHE-WMTF185 Humidifier
- CHIVALZ YZY6001-KC Humidifier
- Everlasting Comfort 6L Humidifier
All room humidifiers, compared in one table · Every Dreo product we cover
Final verdict
A solid choice for large living rooms and open plans. Confirm the model it fits before ordering.
Where to buy
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