This Dreo portable air conditioner review finds the 12,000 BTU Dreo installs in about 10 minutes with no tools and is barely noticeable on speed one or night mode, according to Mike Review, a YouTube product reviewer who tested it at home.
Dreo sells two sizes worth comparing: the 515S (12,000 BTU ASHRAE, 8,000 SACC) at $449.99 and the 318S (8,000 BTU ASHRAE, 5,000 SACC) at $389.98 on Amazon, checked October 16, 2026.
Dreo portable air conditioner review: specs
Prices checked on Amazon Oct 16, 2026. I may earn a commission from links, at no cost to you.
| Dreo 515S (12,000 BTU ASHRAE) | Dreo 318S (8,000 BTU ASHRAE) | |
|---|---|---|
| Price (Oct 16, 2026) | $449.99 | $389.98 |
| Cooling capacity | 12,000 ASHRAE / 8,000 SACC (listed) | 8,000 ASHRAE / 5,000 SACC (listed) |
| Power draw | 1,500 W (listed) | 1,040 W (listed) |
| Hose | Single hose, window kit included | Single hose, window kit included |
| Extras | Self-evaporating (drain-free) design; 45 dB claimed; Alexa, Google, Siri | Self-evaporating design; 45 dB claimed; app and voice control |
| Buy | Check price | Check price |
What the Dreo does well
- Fast setup: plug in, attach the exhaust hose and connect the included window kit, Mike Review showed.
- Voice control: it works with Alexa and Google Assistant, which Mike Review said made it his top choice when comparing options. Dreo also lists Siri.
- Drain-free design: Dreo lists a self-evaporating system that uses sensors to manage condensate.
- Noise: Dreo claims 45 dB with its noise isolation system.
515S or 318S?
Pick the Dreo 515S (12,000 BTU ASHRAE) for living rooms and larger bedrooms; it lists coverage up to 16 feet away. Pick the Dreo 318S (8,000 BTU ASHRAE) for a small bedroom or office; it lists 14 feet and draws 1,040 W vs 1,500 W. Mike Review noted the 12,000 BTU unit weighs around 60 pounds, so plan where it will live.
Running cost
| Model | 8 hours at full listed watts | Cost per night | Per 30 nights |
|---|---|---|---|
| Dreo 515S (12,000 BTU ASHRAE) | 12.0 kWh | $2.20 | $66 |
| Dreo 318S (8,000 BTU ASHRAE) | 8.3 kWh | $1.52 | $46 |
Costs use the 18.31-cent average U.S. residential rate from the U.S. Energy Information Administration and assume full draw; inverter cycling and thermostat settings lower real use.
Dreo vs other portable ACs
Need the most efficient design? See Dual Hose vs Single Hose Portable AC. Can’t use a window at all? Dreo’s Dreo TurboCool Misting Fan 765S is a misting fan, not an AC; see Portable Air Conditioner Without a Window.
Video: Mike Review: “Dreo 12,000 BTU Smart Portable Air Conditioners Review”. Embedded with credit; the findings are the creator’s own.
Frequently Asked Questions
Is the Dreo portable air conditioner good?
Mike Review liked its easy setup, quiet low settings and voice control.
Does the Dreo portable AC need draining?
Dreo lists a self-evaporating, drain-free design.
How much power does the Dreo 515S use?
Dreo lists 1,500 W; the 318S lists 1,040 W.
Does the Dreo work with Alexa?
Yes, Alexa and Google Assistant, and Dreo also lists Siri.
Sources
- Amazon product listings for the products linked above, checked October 16, 2026
- U.S. EIA, Electric Power Monthly, Table 5.6.A (average residential price)
- Mike Review: “Dreo 12,000 BTU Smart Portable Air Conditioners Review”
Related: Portable Air Conditioner for Renters | Dual Hose vs Single Hose Portable AC | Portable Air Conditioner Running Cost | Portable Air Conditioner Without a Window
Notes and disclosure
Note: Prices come from Amazon listings checked on October 16, 2026. Prices change often, so check the current listing. BTU ratings, wattage and noise figures are the manufacturers’ listed numbers unless a reviewer is credited. Running-cost figures are worked examples at the U.S. average residential electricity price, so use your own rate from your power bill. Test results and tips quoted above come from the YouTube creators credited in each section; they are their findings, not hands-on claims from me.
Affiliate Disclosure: If you purchase an item through the links on this page, I may receive a commission, at no additional cost to you. Thank you for supporting the channel.