Updated September 30, 2026 · SmartHomeCue Editorial Team
AlorairCrawlspace vs Duux
AlorairCrawlspace vs Duux: the differences
| Compare |  AlorairCrawlspace |  Duux |
|---|---|---|
| Reference models | AlorAir Sentinel HD35P, AlorAir Sentinel HD55S, AlorAir Sentinel HDi100 | Bora 12L Dehumidifier, Bora Smart 20L Dehumidifier, Bora Smart 30L Dehumidifier |
| Price from | $343.73 | £39.99 |
| Room size (m²) | 93 to 418Higher | 40 |
| Quietest noise level (dB) | 50 | 36Lower |
| Extraction per day (l/day) | 35Higher | 20 |
| Warranty | 6 yearsHigher | 2 years |
| Markets | US | GB |
| Clean air delivery rate (m³/h) | 195 | Not confirmed |
| Filter cost per year | $32.95 to $65.90 | Not confirmed |
| Filter change interval | 3 to 6 months | Not confirmed |
| Extraction test conditions | AHAM (80F, 60% RH) | Not confirmed |
| Water tank (l) | Not confirmed | 4 |
| Power use (W) | Not confirmed | 20 to 315 |
Same on both: Mobile app (Yes).
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Key differences
- Duux scores higher overall: 9.1 vs 9.0.
- Room size (m²) is higher at AlorairCrawlspace: 93 to 418 vs 40.
- Quietest noise level (dB) is lower at Duux: 36 vs 50.
- Extraction per day (l/day) is higher at AlorairCrawlspace: 35 vs 20.
- Warranty is higher at AlorairCrawlspace: 6 years vs 2 years.
- Support channels: only AlorairCrawlspace offers Chat, Community.
- Support channels: only Duux offers Help centre.
- Products: only Duux offers Humidifier.
- Filter types: only AlorairCrawlspace offers Ioniser.
- Filter types: only Duux offers Carbon.
Our verdict on each
AlorairCrawlspace
AlorAirCrawlspace suits US homeowners with a persistently damp crawl space who would rather buy once and leave it running than replace parts. Entry at $343.73 is high for the category, yet 6 years of warranty, 35 litres a day of extraction and coverage of 93 to 418 m² make it a focused answer to a...
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 | AlorairCrawlspace | Duux |
|---|---|---|
| Cost | 9.0Entry at $343.73 is high, while media at $32.95 to $65.90 and 6 years of cover soften it. | 9.4HigherEntry price of £39.99 opens below the dehumidifier entry median of €108.42. |
| Offer | 9.1HigherExtraction of 35 litres a day under AHAM (80F, 60% RH) plus a mobile app cover the crawl space job. | 8.8A mobile app, a dehumidifier, humidifier and fan range and 2 years of warranty cover the offer. |
| Trust | 8.8energy star certification, 6 years warranty and support on email, chat and phone give a solid base. | Not confirmed |
How they place
| Ranking | AlorairCrawlspace | Duux |
|---|---|---|
| Dehumidifiers | 1 of 27 | 12 of 27 |
Every fact side by side
| Fact | AlorairCrawlspace | Duux |
|---|---|---|
| Products | Dehumidifier, Fan | Dehumidifier, Humidifier, FanCovers more |
| Filter types | Ioniser | Carbon |
| Certifications | Energy star | Not confirmed |
| Legal entity | Not confirmed | Stearn Electric Co. Ltd T/A Beam Group |
| Headquarters | United States | Not confirmed |
| Support channels | Email, Chat, Phone, Community | Email, Phone, Help centre |
Where each stands against the rest
| Fact | AlorairCrawlspace | Duux | Median |
|---|---|---|---|
| Clean air delivery rate (m³/h) | 195lowest quarter | Not confirmed | 424.925 |
| Room size (m²) | 93 to 418highest quarter | 40lowest quarter | 124 |
| Filter cost per year | $32.95 to $65.90lowest quarter | Not confirmed | $79.60 |
| Filter change interval | 3 to 6 monthsbelow the median | Not confirmed | 12 |
| Quietest noise level (dB) | 50highest quarter | 36above the median | 25 |
| Extraction per day (l/day) | 35highest quarter | 20below the median | 23.66 |
Median across 65 listed brands.
Pros and cons
AlorairCrawlspace
Pros
- Running cost is easy to plan: media at $32.95 to $65.90 with changes at 3 to 6 months.
- Generous coverage of 93 to 418 m² per unit, with a mobile app for readings and settings.
- Support runs on email, chat and phone, so phone and live chat both sit behind the warranty.
Cons
- Entry at $343.73 ranks 67 of 76 brands, so the purchase carries the cost.
- Filtering is ioniser only, while much of the field offers HEPA media instead.
- Shipping covers US, so buyers in other countries source and import the unit themselves.
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
AlorairCrawlspace
Who it suits
- US homeowners with a persistently damp crawl space or underfloor void.
- Owners who think in running years rather than purchase days, given media at $32.95 to $65.90.
- Buyers who want a 6 years warranty and phone support rather than the cheapest ticket price.
Who should look elsewhere
- Households wanting a purifier or humidifier in the same range: Exquisit covers purifier, dehumidifier and humidifier.
- Buyers who want humidification alongside drying: Gavri CZ-SK covers purifier, dehumidifier and humidifier.
- Value shoppers, since entry at $343.73 ranks 67 of 76 brands, and Daewoo Electricals covers purifier, dehumidifier 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 | AlorairCrawlspace | Duux |
|---|---|---|
| United Kingdom | No | Yes |
| United States | Yes | No |
Questions about each
AlorairCrawlspace
What does the AlorAirCrawlspace cost up front?+
Entry price starts at $343.73 for the base Sentinel dehumidifier, and the wider Sentinel range sits above that. That buying figure is the higher end of the category, so the outlay deserves attention before the running years are counted. Models further up the range add capacity rather than a different kind of machine.
What are the running costs once it is installed?+
The ongoing cost is the filter, listed at $32.95 to $65.90 for replacement media. Extraction is 35 litres a day under the test conditions in AHAM (80F, 60% RH), a cooler and drier setting than a crawl space in a humid season, so treat the quoted output as a ceiling. Filters come round every 3 to 6 months.
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.