Smart 20 L with a Quiet Mark and a carbon filter
Duux Bora Smart 20L (DXDH20UK)
Short answer: if you want a smart 20 L that’s quiet at night, the Bora Smart is Quiet Mark certified at 36 dB in night mode, with app control and a laundry button. The catch: Duux lists a 15 °C minimum operating temperature, so it’s one for heated rooms.
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If you want a smart 20 L that won’t keep you up, the Bora Smart is the one Duux has had Quiet Mark certified. Duux publishes 36 dB in night mode and up to 42 dB at full tilt. It’s rated at up to 20 litres a day, for spaces up to 40 m², with a 4 L tank and the option of a drain hose.
There’s a dedicated laundry button that runs on a 4-hour timer, plus an auto mode that holds your chosen humidity (30–80 %) and a continuous mode that just keeps going. The Duux app lets you set up to seven schedules. There’s also an activated carbon filter for cooking smells and stale air, which Duux suggests replacing after about 3,600 hours. Power is listed at 20–260 W.
Here’s the catch: Duux’s spec table gives a minimum operating temperature of 15 °C. That’s fine in your heated lounge or bedroom, but it rules it out for a cold box room, a garage or a chilly conservatory in winter. For those, a desiccant like the Meaco DD8L is the better fit.
If you want the biggest tank for heavy washing weeks, we’d compare it with the Pro Breeze 20L. And if you want a published extraction table at 20 °C, the MeacoDry Arete Two 20L is the smart 20 L to look at.
Published specification
Extraction figures and room sizes are what the maker claims, and they’re often measured at a warm, humid lab point. Your rooms in the UK are usually cooler, so that’s a lower real take. We haven’t run our own lab tests.
- Type
- Compressor
- Claimed extraction
- 20 L (manufacturer claim)
- Room guidance
- Up to 40 m² (Duux)
- Tank
- 4 litres
- Published noise
- 36–42 dB (36 dB in night mode, per Duux)
- Operating temperature
- Minimum 15 °C (Duux spec table)
- Power (manufacturer)
- 20–260 W; 0.9 W on standby (Duux)
- Weight
- 14.5 kg
- Continuous drain
- Continuous drain via hose
- Laundry mode
- Dedicated laundry button with a 4-hour timer; auto and continuous modes
- Filter
- Activated carbon filter (replace after about 3,600 hours, per Duux)
- Warranty
- 24 months (Duux)
Sources: Duux UK: Bora Smart 20L Dehumidifier (DXDH20UK) product page and specification.
Best suited to
- You, if you want a 20 L that’s quiet enough overnight and you’d like app schedules.
- You, if cooking smells or stale air bother you as well as damp. There’s a carbon filter built in.
Not the right pick when
- The room’s often below 15 °C, like a cold box room or a garage.
- You don’t want to replace a filter. Duux suggests a new one after about 3,600 hours.
Specification strengths
- Quiet Mark certified, with 36 dB published in night mode
- App control with up to 7 schedules, plus a 1–24 hour timer
- Published power of 20–260 W, and 0.9 W on standby
Weak points on paper
- Duux lists a minimum operating temperature of 15 °C
- 4 L tank is smaller than the Pro Breeze 20L’s 5.5 L
- At 14.5 kg, it’s the heaviest of the 20 L machines here
For heated homes, see our best 5 dehumidifiers for UK homes.
Common questions
How quiet is the Duux Bora Smart 20L?
Duux publishes 36 dB in night mode and up to 42 dB on higher settings, and it’s Quiet Mark certified.
Can the Duux Bora dry clothes?
Yes. There’s a dedicated laundry button that runs on a 4-hour timer.
Will the Duux Bora work in a cold room?
We wouldn’t count on it. Duux lists a minimum operating temperature of 15 °C, so for a cold garage or box room we’d go for a desiccant.