BTU/h on the box, litres of condensate on the floor · review
Dreo DR-HAC008S review
A 7 500 BTU single-hose portable air conditioner Dreo positions for bedrooms and offices, built around what it calls a true drainage-free system: condensate is evaporated automatically via an internal pump and sensors, Dreo says, even up to 90% humidity. Operating noise is published at 45 dB(A) (61 dB sound power), with control through the Dreo app or Siri/Alexa/Google Home voice commands.
The bottom line A 7 500 BTU unit built around a genuinely drainage-free design and published noise figures, at a price that sits between the two entry-priced units and the 16 000 BTU Gymax in this comparison. The main published gap is room-size coverage: Dreo gives a sizing formula rather than a fixed m² rating.
Cooling capacity, without a fixed room-size figure
Dreo rates the AC318S at 7 500 BTU, with an adjustable range of 16 to 30 °C and Dreo’s stated “IceCool System” reaching up to roughly 4.3 metres of airflow. Unlike the other three units in this comparison, Dreo doesn’t publish a fixed square-metre coverage figure. Instead, its own buying guidance suggests sizing on about 210 W of cooling capacity per square metre of floor area, with a recommendation to size up for west-facing windows, a top-floor location, large glazed areas, or direct sun exposure — useful context, but it leaves the buyer to do the calculation that Temprium, Okyuk and Gymax do for them with a stated m² figure.
The most detailed noise specification in this comparison
Dreo publishes both an operating noise figure, 45 dB(A), and a sound-power figure, 61 dB, attributing the result to what it calls a patented noise-isolation design that dampens compressor and airflow noise. That’s more detail than any other unit checked for this comparison: Temprium publishes 53 dB(A) but only for sleep mode, and Okyuk and Gymax publish no noise figure at all.
A genuinely drainage-free claim
Where Temprium describes a self-evaporation system that “significantly reduces” how often its tank needs emptying, Dreo makes a stronger claim for the AC318S: condensate is evaporated automatically through an internal pump and sensor system, which Dreo states continues to work even at up to 90% relative humidity, without a manual emptying step under normal use. Dehumidification itself is rated at up to 2.5 L/h as part of the unit’s 3-in-1 cool/fan/dehumidify function set.
Controls and installation
Control runs through the Dreo app or voice commands via Siri, Amazon Alexa and Google Home, alongside a magnetic remote that Dreo says attaches to the unit’s body. The included window kit covers a width range of 43 to 135 cm and ships with panels for casement/tilt-turn and sliding windows, plus a separately available wall-adapter accessory for installations that don’t use a window at all — a broader stated range of installation types than the Temprium or Okyuk kits in this comparison.
Where it’s actually for sale
Keepa data confirmed a valid New-condition price on all four European marketplaces checked, at a consistent ≈460 € on Germany, France and Italy and ≈496 € on Spain. The ASIN wasn’t found as a listing on Amazon US, and on Amazon GB it was listed but with no active offer at the time of checking, so availability there should be confirmed before ordering. At 22.5 kg (27 kg shipped), it sits between the lighter Temprium and Okyuk units and the considerably heavier 34 kg Gymax in this comparison.
Prices quoted in this text were read on 2026-08-24. The live price is at the top of the page.
Where this one sits in its aisle
At 460 €, it is the 3 cheapest of the 4 models in this category published here.
Cheapest in the aisle240 €
Median460 €
Dearest in the aisle1600 €
What we like, and what we don't
Strengths
Confirmed with a valid New-condition price on all four European markets checked (DE, FR, IT, ES)
Published noise figures — 45 dB(A) operating, 61 dB sound power — more detail than the Temprium or Okyuk units in this comparison, which publish only a sleep-mode figure or none at all
Drainage-free system Dreo describes as working automatically up to 90% humidity, via an internal pump and sensors, rather than the frequency-reduction claim made by the Temprium unit here
App and voice control through Siri, Alexa and Google Home, plus a magnetic remote
Window kit covers casement/tilt-turn and sliding windows, plus an optional wall-adapter accessory
Compromises
No fixed room-size (m²) figure is published; Dreo instead gives buyers a sizing guideline of roughly 210 W of cooling per square metre of floor area to estimate for themselves
No published fan-speed count
At ≈460–500 €, it's the second most expensive of the four units in this comparison
Refrigerant type and energy class are not published, unlike the Okyuk unit in this comparison
Specifications
Cooling capacity
7 500 BTU, cooling range up to ≈4.3 m airflow
Noise
45 dB(A) operating / 61 dB sound power, per Dreo
Condensate handling
Drainage-free — automatic evaporation via pump + sensors, rated to 90% humidity
Dehumidification rate
Up to 2.5 L/h
Temperature range
16–30 °C
Controls
Dreo app, Siri/Alexa/Google Home voice control, magnetic remote
Window kit
43–135 cm width; casement/tilt-turn, sliding, and wall-adapter kits
Item / shipping weight
22.5 kg / 27 kg
Amazon reference
B0GVJXQ9J5 (EAN 0810142857116, identical on DE/FR/IT/ES)
Questions people actually ask
Do I need to empty a water tank with the Dreo AC318S?
Dreo describes a drainage-free system that evaporates condensate automatically through an internal pump and sensors, and states this works even at up to 90% relative humidity. No manual emptying step is described for normal use — a more specific claim than the general self-evaporation wording used by the Temprium unit in this comparison.
How loud is it?
Dreo publishes 45 dB(A) for operating noise and 61 dB for sound power — the most detailed noise specification among the four units checked for this comparison. By contrast, Temprium publishes a figure only for sleep mode, and Okyuk and Gymax publish none.
What room size is it rated for?
Dreo does not publish a fixed m² figure for this model, unlike the other three units in this comparison. Instead, it gives buyers a sizing guideline of roughly 210 W of cooling per square metre of floor area, and recommends a higher-capacity unit for west-facing windows, top-floor rooms, large glazing or direct sun exposure.
Our score
8.0/ 10
A 7 500 BTU unit built around a genuinely drainage-free design and published noise figures, at a price that sits between the two entry-priced units and the 16 000 BTU Gymax in this comparison. The main published gap is room-size coverage: Dreo gives a sizing formula rather than a fixed m² rating.
Who this one is for
Bedrooms or offices where quiet operation and hands-off condensate handling matter more than a low upfront price.
Compared with its closest rivals
Same category, nearest prices. Only the specifications every one of them states are shown — a half-empty column compares nothing.
Model
Price
Cooling capacity
Temperature range
Controls
Amazon reference
Dreo DR-HAC008S
460 €
7 500 BTU, cooling range up to ≈4.3 m airflow
16–30 °C
Dreo app, Siri/Alexa/Google Home voice control, magnetic remote
B0GVJXQ9J5 (EAN 0810142857116, identical on DE/FR/IT/ES)
A 16 000 BTU 4-in-1 portable air conditioner that adds a heating mode alongside cooling, dehumidifying and fan, for rooms Gymax rates up to 45 m². It's controlled by remote, on-unit panel, or WiFi through the 'Smart Life' app, and is the largest and most expensive of the four units in this comparison.
Best for: Larger rooms up to 45 m² where one appliance needs to both cool in summer and add supplementary heat, bought from a market where it's confirmed in stock.
A 7 000 BTU single-hose portable air conditioner for rooms up to 25 m², built around an R290 refrigerant system Okyuk rates at energy class A. It includes an LED display with a water-level indicator, a 24-hour timer, and a window kit Okyuk describes as fitting widths from 43 to 135 cm, including a stated compatibility with 95% of German sliding windows.
Best for: Buyers who want a wider 25 m² coverage claim and a published refrigerant/energy class, but don't need app or voice control.
A 7 000 BTU / 2.0 kW single-hose portable air conditioner for rooms up to 20 m², with touch-panel, remote, app and Alexa/Google Assistant control. Temprium states a built-in self-evaporation system that significantly cuts how often the tank needs draining, and ships a window seal kit it describes as fitting most European window types.
Best for: Renters or small bedrooms up to about 20 m² who want app and voice control without paying for a higher-BTU unit.
