Updated September 30, 2026 · SmartHomeCue Editorial Team
Alen Air Purifiers vs Coway Canada
Where Alen Air Purifiers and Coway Canada differ
| Compare | Alen Air Purifiers ReviewVisitVisit | Coway Canada ReviewVisitVisit |
|---|---|---|
| Reference models | BreatheSmart 75i, BreatheSmart 45i, BreatheSmart 35i | Airmega 150, Airmega Mighty2, Airmega ProX |
| Price from | $149 | CA$119 |
| Clean air delivery rate (m³/h) | 637.125 | 985.42Higher |
| Room size (m²) | 260.13 | 395Higher |
| Filter cost per year | $79.20 to $99 | CA$59 to CA$118 |
| Filter change interval | 12 to 15 monthsHigher | 6 to 12 months |
| Quietest noise level (dB) | 25 | 19Lower |
| Power use (W) | 1.36 to 55Lower | 65 |
| Warranty | 1 year | 5 yearsHigher |
| Markets | US | CA |
| Mobile app | Yes | Not confirmed |
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Key differences
- Coway Canada scores higher overall: 9.4 vs 8.9.
- Clean air delivery rate (m³/h) is higher at Coway Canada: 985.42 vs 637.125.
- Room size (m²) is higher at Coway Canada: 395 vs 260.13.
- Filter change interval is higher at Alen Air Purifiers: 12 to 15 months vs 6 to 12 months.
- Quietest noise level (dB) is lower at Coway Canada: 19 vs 25.
- Power use (W) is lower at Alen Air Purifiers: 1.36 to 55 vs 65.
- Warranty is higher at Coway Canada: 5 years vs 1 year.
- Support channels: only Alen Air Purifiers offers Help centre.
- Support channels: only Coway Canada offers Email.
- Filter types: only Alen Air Purifiers offers Ioniser.
Our verdict on each
Alen Air Purifiers
Alen Air Purifiers suits buyers who want a single machine covering a large open floor and will keep it running for years. The top BreatheSmart purifier delivers 637.125 m³/h of clean air delivery for a 260.13 m² room, and the entry tower purifier opens the range at $149.
Coway Canada
Coway Canada suits Canadian households that want one purifier covering a large open plan and a filter set they can plan for. Output of 985.42 m³/h ranks high against the brands tracked here, and 5 years of warranty adds to the case. Roomier budgets get more machine.
Score breakdown
| Area | Alen Air Purifiers | Coway Canada |
|---|---|---|
| Cost | 8.8Entry at $149 and filters at $79.20 to $99 a year, so the purchase price is the expensive part. | 9.4HigherPurifiers start at CAD 119 and filter sets cost CAD 59 to CAD 118 a year, so running cost is easy to budget. |
| Offer | 8.9637.125 m³/h of air delivery, 260.13 m² of coverage and hepa h13, carbon and ioniser inside 12 to 15 months. | 9.5HigherOutput of 985.42 m³/h covers 395 m² with hepa h13 and carbon filtration and a 5 years warranty. |
| Trust | 8.8Alen Corporation is named as the legal entity, with 1 year cover and support on phone and help centre. | 9.5HigherBacked by Coway Company, Limited, trading since 1989, with email and phone support. |
Licences and countries
| Country | Alen Air Purifiers | Coway Canada |
|---|---|---|
| Headquarters | United States | Not confirmed |
Additional countries for Alen Air Purifiers: 1. Additional countries for Coway Canada: 1.
The numbers side by side
| Fact | Alen Air Purifiers | Coway Canada |
|---|---|---|
| Clean air delivery rate (m³/h) | 637.125 | 985.42 |
| Room size (m²) | 260.13 | 395 |
| Filter change interval | 12 to 15 months | 6 to 12 months |
| Quietest noise level (dB) | 25 | 19 |
| Power use (W) | 1.36 to 55 | 65 |
| Warranty | 1 year | 5 years |
What we checked
Alen Air Purifiers
- alen.com: 17 facts, checked September 30, 2026
Coway Canada
- cowaymega.ca: 15 facts, checked September 30, 2026
How they place
| Ranking | Alen Air Purifiers | Coway Canada |
|---|---|---|
| Air purifiers | 7 of 71 | 3 of 71 |
Every fact side by side
| Fact | Alen Air Purifiers | Coway Canada |
|---|---|---|
| Products | Purifier | Purifier |
| Filter types | Hepa h13, Carbon, IoniserCovers more | Hepa h13, Carbon |
| Certifications | Energy star | Not confirmed |
| Legal entity | Alen Corporation | Coway Company, Limited |
| Headquarters | United States | Not confirmed |
| Founded | Not confirmed | 1989 |
| Support channels | Phone, Help centre | Email, Phone |
Where each stands against the rest
| Fact | Alen Air Purifiers | Coway Canada | Median |
|---|---|---|---|
| Clean air delivery rate (m³/h) | 637.125above the median | 985.42highest quarter | 424.925 |
| Room size (m²) | 260.13highest quarter | 395highest quarter | 124 |
| Filter change interval | 12 to 15 monthshighest quarter | 6 to 12 monthsat the median | 12 |
| Quietest noise level (dB) | 25at the median | 19lowest quarter | 25 |
| Power use (W) | 1.36 to 55lowest quarter | 65above the median | 46 |
| Warranty | 1 yearbelow the median | 5 yearshighest quarter | 2 years |
Median across 73 listed brands.
Pros and cons
Alen Air Purifiers
Pros
- 637.125 m³/h of clean air delivery with 260.13 m² of stated coverage, so a single unit handles a big open room.
- Filters last 12 to 15 months and cost $79.20 to $99 a year, which spreads the running cost over fewer purchases.
- Runs at 25 dB on the quietest setting, so a machine in a bedroom does not need switching off at night.
Cons
- Entry price of $149 ranks 49 of 76 brands, so this is not the cheapest way into the category.
- The catalogue is limited to purifier, so Vornado Air or Daewoo Electricals suit a buyer who also wants a fan or a dehumidifier.
- Availability is listed for US alone, so a buyer elsewhere has less reason to choose this brand over Clarifion.
Coway Canada
Pros
- Rated 985.42 m³/h, which puts it near the top of the brands compared on air delivery.
- Covers up to 395 m², so a single unit handles a large open space.
- HEPA and carbon filtration (hepa h13 and carbon) in the same machine.
Cons
- Starts at CAD 119, higher than most of the purifiers tracked here.
- Filter sets at CAD 59 to CAD 118 a year add running cost on top of the purchase.
- A single market reach (CA) means this pricing and range apply in Canada only.
Who each suits
Alen Air Purifiers
Who it suits
- US buyers who want a single purifier sized for a large open room rather than a small bedroom.
- Households that want app control alongside phone and help centre support from the maker.
- Owners who plan to keep one unit running long term, since 12 to 15 months between filter changes spreads the cost of $79.20 to $99 a year over fewer purchases.
Who should look elsewhere
- Buyers who want fans and humidifiers as well as purifiers, since Vornado Air covers purifier, humidifier and fan.
- Homes that also need drying, since Daewoo Electricals covers purifier, dehumidifier and fan.
- Pet odour cases, since Clarifion lists a pet smell neutralizer among its models.
Coway Canada
Who it suits
- Households in Canada with an open plan that one purifier can cover
- Buyers who prioritise air delivery over the lowest purchase price
- Anyone who wants a long warranty behind a large room machine
Who should look elsewhere
- Buyers outside Canada, since CA covers a single market
- Shoppers chasing the lowest entry price, as CAD 119 sits well above most rivals
- Those who want the lightest running costs, given CAD 59 to CAD 118 a year
Country by country
| Country | Alen Air Purifiers | Coway Canada |
|---|---|---|
| Canada | No | Yes |
| United States | Yes | No |
Questions about each
Alen Air Purifiers
How much does the cheapest Alen purifier cost?+
The entry tower purifier sets the entry point at $149. Filters for the top BreatheSmart model add $79.20 to $99 a year on top, so the yearly figure matters as much as the sticker price for anyone keeping the unit for years.
What do replacement filters cost and how often do they need changing?+
Filters for the top BreatheSmart model run $79.20 to $99 a year, and filters hold for 12 to 15 months between changes. That interval sits above the 6 months typical across the category, which is why the yearly figure reads as reasonable.
Coway Canada
What does the cheapest Coway Canada purifier cost?+
Purifiers start at CAD 119, which is the entry figure for the Airmega range. That is above the middle of the brands tracked on entry price, where Coway Canada ranks 33 of 76. Buyers wanting the largest machine pay more for the extra capacity.
How much do replacement filters cost each year?+
Filter sets cost CAD 59 to CAD 118 a year, with changes falling due every 6 to 12 months. On this measure Coway Canada ranks 9 of 46 among the brands compared, so the running cost sits mid field rather than at either extreme. Budget for it in the same year as the purchase.