DREO 40-Inch Evaporative Air Cooler Review: A 35 dB Tower for Bedrooms
DREO's 40 inch evaporative tower cooler runs at a rated 35 dB, oscillates 80 degrees and has a removable tank, pad and rear grille.
By Daniel Brooks
Updated October 29, 2026
The DREO 40-Inch Evaporative Air Cooler with Remote is a slim 40 inch tower cooler rated at 35 dB, with 80 degree oscillation, a remote, ice packs and a removable tank, pad and rear grille. For more models, see our Evaporative Air Coolers page.
Our Verdict
This is our top bedroom cooler. The cross-flow impeller keeps it quiet, the tower shape fits beside a bed, and easy cleaning keeps the pad fresh.
It moves less air than box-style coolers, so it is a one-room cooler, not a choice for a garage or open-plan space.
DREO 40-Inch Evaporative Air Cooler with Remote
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Key Specifications
| Feature | Specification |
|---|---|
| Brand | DREO |
| Model | 40-inch tower cooler |
| Height | 40 inches |
| Noise | 35 dB rated |
| Air speed | up to 22 ft/s |
| Oscillation | 80 degrees |
| Cleaning | removable tank, pad and rear grille |
| Weight | 13.2 pounds |
Design
The tower measures 11.42 by 11.42 by 39.69 inches and weighs 13.2 pounds, about the footprint of a tower fan.
The water tank, cooling pad and rear grille all come out for cleaning, which matters because a pad left damp can grow mildew.
Controls
DREO’s cross-flow impeller design cuts fan noise to a rated 35 dB, and the fan spins at 1,500 rpm for air speeds up to 22 ft/s with 80 degree oscillation.
You can run it from the included remote and add the ice packs for colder air. DREO rates the output at up to 13,000 cubic feet of cool, humid air per hour.
Placement Tips
Place the cooler near an open window or door, or with a window cracked on the far side of the room, so dry air can come in and humid air can escape. Aim the airflow at where you sit, sleep or work rather than into a corner.
Evaporative coolers work best in hot, dry weather. On humid days, switch off the pump or water mode and run the fan alone, since adding more moisture to damp air makes a room feel sticky rather than cooler.
Running Costs and Care
An evaporative cooler draws far less power than an air conditioner, so running costs are low. Budget for water and an occasional replacement pad instead of a big electricity bill.
Drain and rinse the tank regularly so water does not sit stale, and clean or replace the cooling pad as the maker recommends. Before storing the cooler for winter, run the fan without water so the pad dries completely and does not grow mildew.
How It Compares
Against the Antarctic Star 2-in-1 Evaporative Tower Cooler, the DREO is quieter and easier to clean, while the Antarctic Star adds a 24 hour timer and a low water alarm for less money.
Against the Hessaire MC18V, the DREO is quieter and adds a remote and oscillation, while the Hessaire moves more air and runs on a hose.
Pros and Cons
| Pros | Cons |
|---|---|
| Rated at 35 dB | Lower airflow than box coolers |
| Slim tower footprint | One-room cooling only |
| Removable tank, pad and grille | No hose hookup |
| Remote included | Needs dry air |
| 80 degree oscillation | Ice packs need freezing |
Who Should Buy It
| Who Should Buy It? | Who Should Look Elsewhere? |
|---|---|
| Bedrooms | Garages |
| Home offices | Patios |
| Light sleepers | Large open spaces |
| Small living rooms | Humid regions |
For more options, see our picks for the best evaporative air coolers for bedrooms and the best evaporative air coolers.
Final Verdict
The DREO 40-Inch Evaporative Air Cooler with Remote is a quiet, slim evaporative tower that suits bedrooms and small rooms in dry weather. You can check the current price and details for the DREO 40-Inch Evaporative Air Cooler with Remote.
Frequently Asked Questions
How loud is the DREO evaporative air cooler?
DREO rates it at 35 dB.
Does it oscillate?
Yes, 80 degrees.
Does it come with a remote?
Yes, and ice packs.
Can I remove the tank and pad?
Yes, the tank, pad and rear grille come out for cleaning.
How much does it weigh?
13.2 pounds.
About the author
Daniel Brooks is a home cooling editor at WikiCooling, covering window, portable, through-the-wall and mini-split air conditioners, fans, and dehumidifiers. He researches cooling capacity, energy efficiency, noise levels, installation requirements, and buyer feedback to help homeowners choose the right unit for their room size, climate, and budget.