Updated September 30, 2026 · SmartHomeCue Editorial Team
AirDoctor vs Coway Canada
What sets them apart
| Compare |  AirDoctor | Coway Canada ReviewVisitVisit |
|---|---|---|
| Reference models | AirDoctor 2000, AirDoctor 3500, AirDoctor 5500 | Airmega 150, Airmega Mighty2, Airmega ProX |
| Price from | $399 | CA$119 |
| Clean air delivery rate (m³/h) | 944.64 | 985.42Higher |
| Room size (m²) | 96.9 | 395Higher |
| Filter cost per year | $126.99 | CA$59 to CA$118 |
| Warranty | 1 year | 5 yearsHigher |
| Markets | US, CACovers more | CA |
| Quietest noise level (dB) | Not confirmed | 19 |
| Power use (W) | Not confirmed | 65 |
| Mobile app | Yes | Not confirmed |
Same on both: Filter change interval (6 to 12 months).
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Key differences
- Coway Canada scores higher overall: 9.4 vs 8.7.
- Clean air delivery rate (m³/h) is higher at Coway Canada: 985.42 vs 944.64.
- Room size (m²) is higher at Coway Canada: 395 vs 96.9.
- Warranty is higher at Coway Canada: 5 years vs 1 year.
- Support channels: only AirDoctor offers Help centre.
- AirDoctor is available in 1 more country.
- Markets: only AirDoctor offers US.
Our verdict on each
AirDoctor
AirDoctor suits households that want serious airflow in a mid-size room and can absorb a higher outlay. The top model moves 944.64 m³/h of air, the range starts at $399 in US and CA, and replacement filters add $126.99 each year.
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 | AirDoctor | Coway Canada |
|---|---|---|
| Cost | 8.3Entry of $399 plus $126.99 of filters a year keeps the outlay high, ranking 69 of 76. | 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 | 9.0The range pairs hepa h13 and carbon media with a mobile app, 944.64 m³/h of airflow, US and CA sales and a 1 year warranty. | 9.5HigherOutput of 985.42 m³/h covers 395 m² with hepa h13 and carbon filtration and a 5 years warranty. |
| Trust | Not confirmed | 9.5Backed by Coway Company, Limited, trading since 1989, with email and phone support. |
Licences and countries
Available in 1 country for both. Additional countries for AirDoctor: 1.
If neither fits
AlorairCrawlspace has warranty at 6 years, against 1 year for AirDoctor and 5 years for Coway Canada.
AlorairCrawlspace reviewSources behind this comparison
AirDoctor
- airdoctor.com: 12 facts, checked September 30, 2026
Coway Canada
- cowaymega.ca: 15 facts, checked September 30, 2026
How they place
| Ranking | AirDoctor | Coway Canada |
|---|---|---|
| Air purifiers | 8 of 71 | 3 of 71 |
Every fact side by side
| Fact | AirDoctor | Coway Canada |
|---|---|---|
| Products | Purifier | Purifier |
| Filter types | Hepa h13, Carbon | Hepa h13, Carbon |
| Legal entity | Not confirmed | Coway Company, Limited |
| Founded | Not confirmed | 1989 |
| Support channels | Email, Phone, Help centreCovers more | Email, Phone |
Where each stands against the rest
| Fact | AirDoctor | Coway Canada | Median |
|---|---|---|---|
| Clean air delivery rate (m³/h) | 944.64highest quarter | 985.42highest quarter | 424.925 |
| Room size (m²) | 96.9below the median | 395highest quarter | 124 |
| Filter change interval | 6 to 12 monthsat the median | 6 to 12 monthsat the median | 12 |
| Quietest noise level (dB) | Not confirmed | 19lowest quarter | 25 |
| Power use (W) | Not confirmed | 65above the median | 46 |
| Warranty | 1 yearbelow the median | 5 yearshighest quarter | 2 years |
Median across 73 listed brands.
Pros and cons
AirDoctor
Pros
- Airflow is the standout number: the top AirDoctor purifier moves 944.64 m³/h and covers 96.9 m².
- Filter media combine hepa h13 and carbon in the same cartridge, so particles and odours are handled together.
- Replacement spending is easy to forecast: a year of AirDoctor filters costs $126.99.
Cons
- An entry price of $399 places AirDoctor at 69 of 76 brands on price from, well down the table.
- Filter running cost is the weakest link: $126.99 a year ranks 37 of 46.
- Sales run in US and CA, which narrows where the range can be bought and serviced.
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
AirDoctor
Who it suits
- Households in US and CA who want app control and top-end airflow from the top AirDoctor purifier.
- Buyers who budget filter spending in advance, since a year of filters costs $126.99.
- Anyone upgrading a purifier for a mid-size room, where the top model covers 96.9 m².
Who should look elsewhere
- Vornado Air, which covers purifier, humidifier and fan if you want a purifier sitting alongside fans and humidifiers.
- Daewoo Electricals, whose purifier, dehumidifier and fan line adds a dehumidifier where AirDoctor's range stays with purifier.
- Clarifion, whose models centre on ionizer and pet smell units, a different route from AirDoctor's hepa h13 and carbon media.
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 | AirDoctor | Coway Canada |
|---|---|---|
| United States | Yes | No |
| Canada | Yes | Yes |
Questions about each
AirDoctor
How much does an AirDoctor purifier cost to start with?+
The AirDoctor purifier range starts at $399, and that figure buys the entry model rather than the top of the range. The listed models are AirDoctor 2000, AirDoctor 3500, AirDoctor 5500, so buyers who want the highest airflow step up the range rather than sideways.
What do replacement filters cost over a year?+
Filters are the running cost here: $126.99 covers a year of AirDoctor replacement filters. The top AirDoctor purifier asks for a change on a cycle of 6 to 12 months, so a year of heavy use can mean ordering more than a single pack.
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.