Coway Airmega 400
$388.99
Price checked 2026-08-24
Buy link unavailable
Fail-closed pending verified Associates tag.
Coway Airmega 400 vs Dyson Purifier Hot+Cool HP07
Side-by-side spec diff. Differing values highlighted; identical values dimmed. CADR and ozone rows only carry dual-sourced values. Prices as of 2026-08-24.
| Spec | Coway Airmega 400 | Dyson Purifier Hot+Cool HP07 |
|---|---|---|
| Price | $388.99 | $745.46 |
| Availability | In Stock | In Stock |
| CADR ✓₂ | 328 smoke, 328 dust, 400 pollen cfm ✓₂ | Not published by manufacturer |
| Room size | 1560 ft² AHAM · 3120 ft² @1 ACH | — |
| Filter type | True HEPA | HEPA H13 (sealed) |
| Filter stages | pre_washable, max2_combined_carbon_hepa | sealed_hepa_h13, activated_carbon |
| Noise | 22–52 dB | — |
| Ozone status ✓₂ | CARB-certified (Mechanical) — list entry Airmega 400(G)/(W), model AP-2015F, certified 2026-01-13, approval G-26-006; Coway's product page makes no additional ozone statement. | CARB-certified (Mechanical) — list entry HP07 ZZ, certified 2023-02-02, approval G-23-031 (YY variant since 2022-06-15); Dyson's retail listing makes no additional ozone statement. |
| App / ecosystem | no_app | mydyson, alexa, google |
| Sensors | PM2.5/air-quality | PM2.5/air-quality |
| Auto mode | Yes | Yes |
| Humidifier combo | No | No |
Dyson Purifier Hot+Cool HP07
$745.46
Price checked 2026-08-24
Buy link unavailable
Fail-closed pending verified Associates tag.
Independent comparison. Prices are point-in-time scrapes from Amazon.com listings, not offers. CADR figures render only where two independent sources agree; ozone status is checked against the California Air Resources Board certified-device list. No health claims beyond manufacturer documentation.