Updated September 30, 2026 · SmartHomeCue Editorial Team
Airthereal vs Duux
Where Airthereal and Duux differ
| Compare | Airthereal ReviewSee alternativesSee alternatives |  Duux |
|---|---|---|
| Reference models | Pure Morning APH260, Pure Morning APH320, Ethereal Rain AEH300, Glory Days AGH400 | Bora 12L Dehumidifier, Bora Smart 20L Dehumidifier, Bora Smart 30L Dehumidifier |
| Price from | €43.95 | £39.99 |
| Room size (m²) | 185Higher | 40 |
| Quietest noise level (dB) | 22Lower | 36 |
| Water tank (l) | 1.5 | 4Higher |
| Markets | US, CA, DE | GB |
| Clean air delivery rate (m³/h) | 319.41 | Not confirmed |
| Filter cost per year | €49.43 to €65.90 | Not confirmed |
| Filter change interval | 6 to 8 months | Not confirmed |
| Extraction per day (l/day) | Not confirmed | 20 |
| Power use (W) | Not confirmed | 20 to 315 |
Same on both: Mobile app (Yes), Warranty (2 years).
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Key differences
- Room size (m²) is higher at Airthereal: 185 vs 40.
- Quietest noise level (dB) is lower at Airthereal: 22 vs 36.
- Water tank (l) is higher at Duux: 4 vs 1.5.
- Airthereal is available in 2 more countries.
- Products: only Airthereal offers Purifier.
- Products: only Duux offers Fan.
- Filter types: only Airthereal offers Hepa h13, Uv, Ioniser.
- Markets: only Airthereal offers US, CA, DE.
- Markets: only Duux offers GB.
Our verdict on each
Airthereal
Airthereal suits renters and homeowners who want room air, dehumidifying and filtered water from a single maker, starting at an entry price of €43.95.
Duux
Duux suits UK households drying a damp bedroom or a small sitting room: the Bora Smart moves 20 litres a day a day and the range starts at £39.99. Room coverage of 40 m² is the ceiling, so buyers drying larger spaces should weigh a brand with a wider range.
Score breakdown
| Area | Airthereal | Duux |
|---|---|---|
| Cost | 9.4Entry price of €43.95 and filter spend of €49.43 to €65.90 a year both sit under the site medians. | 9.4Entry price of £39.99 opens below the dehumidifier entry median of €108.42. |
| Offer | 8.9HigherA single maker covers purifier, dehumidifier and humidifier plus reverse osmosis water filtering stated against 42, 53 and 58. | 8.8A mobile app, a dehumidifier, humidifier and fan range and 2 years of warranty cover the offer. |
| Trust | 9.1Founded 2018, warranty of 2 years, and support across email, phone and help centre. | Not confirmed |
A third option
AlorairCrawlspace has room size (m²) at 93 to 418, against 185 for Airthereal and 40 for Duux.
AlorairCrawlspace reviewWhere these facts come from
Airthereal
- airthereal.com: 16 facts, checked September 30, 2026
Duux
- duux.co.uk: 14 facts, checked September 30, 2026
How they place
| Ranking | Airthereal | Duux |
|---|---|---|
| Dehumidifiers | 11 of 27 | 12 of 27 |
Every fact side by side
| Fact | Airthereal | Duux |
|---|---|---|
| Products | Purifier, Dehumidifier, Humidifier | Dehumidifier, Humidifier, Fan |
| Filter types | Hepa h13, Carbon, Uv, IoniserCovers more | Carbon |
| Certifications | Aham verifide, Energy star | Not confirmed |
| Legal entity | Not confirmed | Stearn Electric Co. Ltd T/A Beam Group |
| Founded | 2018 | Not confirmed |
| Support channels | Email, Phone, Help centre | Email, Phone, Help centre |
Water filters
| Fact | Airthereal | Duux |
|---|---|---|
| Filter system | Reverse osmosis | Not confirmed |
| Cartridge price | €43.95 | Not confirmed |
| NSF/ANSI standards | 42, 53, 58 | Not confirmed |
| Certification scope | Lite3 RO system performance stated against NSF/ANSI 58, 53, 42 and EPA 200/300/537; 5-stage system eradicates 99% of common tap water pollutants | Not confirmed |
| PFAS and lead reduction | Yes | Not confirmed |
| Installation required | No | Not confirmed |
Where each stands against the rest
| Fact | Airthereal | Duux | Median |
|---|---|---|---|
| Clean air delivery rate (m³/h) | 319.41below the median | Not confirmed | 424.925 |
| Room size (m²) | 185above the median | 40lowest quarter | 124 |
| Filter change interval | 6 to 8 monthsbelow the median | Not confirmed | 12 |
| Quietest noise level (dB) | 22below the median | 36above the median | 25 |
| Extraction per day (l/day) | Not confirmed | 20below the median | 23.66 |
| Water tank (l) | 1.5lowest quarter | 4at the median | 4 |
Median across 65 listed brands.
Pros and cons
Airthereal
Pros
- Entry price of €43.95 sits well under the site median of €96.46 across 76 brands
- Covers purifier, dehumidifier and humidifier, so air and moisture devices come from a single maker
- Filter stack combines hepa h13, carbon and uv in the same cartridge
Cons
- Clean air delivery of 319.41 m³/h ranks 31 of 47, under the site median of 429.85 m³/h
- Filters fall due every 6 to 8 months, so the €49.43 to €65.90 yearly bill recurs through the year
- Direct shipping covers US, CA and DE only, so buyers elsewhere rely on a reseller for stock and warranty claims
Duux
Pros
- The Bora Smart removes 20 litres a day a day, which suits a damp bedroom or a small sitting room.
- The starting price of £39.99 sits below the dehumidifier entry median of €108.42 across the brands compared here.
- Support runs on email, phone and help centre, so a fault can go straight to a phone line rather than an inbox.
Cons
- Its 40 m² room rating sits well below the dehumidifier median of 194.09 m², and Duux places 45 of 54 on that measure.
- The only filter listed is carbon, so treat the Bora line as a moisture job rather than a particle one.
- Shipping information lists GB and no other market, so buyers outside the UK are out of luck.
Who each suits
Airthereal
Who it suits
- Renters and homeowners who want a single brand across air, dehumidifying and water filtering
- Buyers who want a documented certification rather than marketing alone, with aham verifide and energy star listed
- Households in the United States, CA and DE who can order direct and want the same filter types across the range
Who should look elsewhere
- Large open rooms needing stronger airflow, since 319.41 m³/h sits under the site median of 429.85 m³/h
- Buyers who want a purifier specialist, where Clarifion lists purifier alone
- Anyone who also wants a fan in the same range, since Vornado Air covers purifier, humidifier and fan
Duux
Who it suits
- Households in the UK with damp in a bedroom, a box room or a home office, where a modest machine is enough.
- Renters who want a single appliance with app control rather than a full air-care range to choose from.
- Buyers who want a phone route on a warranty claim, since support runs on email, phone and help centre.
Who should look elsewhere
- Large open-plan homes, where 40 m² coverage is small beside the category median of 194.09 m².
- Shoppers wanting purification and moisture from one brand: Exquisit lists purifier, dehumidifier and humidifier, against Duux's dehumidifier, humidifier and fan.
- Anyone buying outside the UK, since shipping information lists GB only.
Country by country
| Country | Airthereal | Duux |
|---|---|---|
| Canada | Yes | No |
| Germany | Yes | No |
| United Kingdom | No | Yes |
| United States | Yes | No |
Questions about each
Airthereal
How much does an Airthereal air purifier cost at entry?+
Purifiers start at €43.95, the figure most shoppers meet first. That places Airthereal 20 of 76 brands on this site and below the €96.46 median. The hardware price is the whole entry cost, with filter spending added to it later.
What do replacement filters cost each year?+
Filter spending runs €49.43 to €65.90 a year across the range, and a filter falls due every 6 to 8 months depending on use. On this site that running cost ranks 17 of 46 brands, below the €80.67 typical figure, so ownership stays cheaper than at brands with costlier filter stacks.
Duux
How much does the cheapest Duux cost?+
Duux lists a starting price of £39.99 in GBP. Dehumidifier entry prices across the brands in this comparison sit around €108.42, so Duux opens below the middle of the field. Anything higher up the Bora range sits in different territory, so the ticket you see at the top of the range is not the ticket this ranking reflects.
Where does Duux ship?+
Shipping information lists GB, which makes Duux a UK order rather than a pan-European one. Support for a UK unit runs on email, phone and help centre, and that matters if you are outside the market, since the same routes are the ones a warranty claim would use.