Best for Bedrooms
Dreo
Dreo 318S Smart Portable Air Conditioner
8.9/ 10
Amazon: 4.3★ from 1,200 ratings
£399.99
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Key features
- 7,500 BTU cooling (rooms up to 20m²)
- Patented noise isolation — 46–51 dB
- Full smart control: app, Siri, Alexa, Google Home
- True drainage-free operation
- Class A energy efficiency
- 800W power draw
- R290 refrigerant
- 3-in-1: cooling, fan, dehumidifier
Our verdict
The Dreo 318S is specifically engineered for quiet overnight cooling, and it delivers. Its patented noise isolation system keeps sound pressure down to 46 dB in quiet mode — lower than a library — making it one of the quietest portable ACs you can buy. At 7,500 BTU it’s designed for rooms up to 20m², which covers most UK bedrooms comfortably. Smart features are excellent: full app control via Siri, Alexa and Google Home, scheduling, and a truly drainage-free design that auto-evaporates condensate. The 800W power draw is the lowest here, so running costs are genuinely modest. It won’t cool a large living room, but for bedrooms and small offices it’s hard to beat.
Pros
- ✓Exceptionally quiet — ideal for sleeping
- ✓Best smart features in this price range
- ✓Very low power consumption
- ✓No drainage needed — truly hands-off
- ✓Compact and relatively lightweight at 22.5kg
Cons
- ✗Only 7,500 BTU — won’t cool large rooms
- ✗Pricey for the BTU output
- ✗Occasionally sells out in summer
- ✗No heating mode
