Coway Airmega AP-1512HHS vs Dyson Purifier Big+Quiet Formaldehyde BP03

Coway Airmega AP-1512HHS wins on value, warranty and everyday practicality, with True HEPA, a washable pre-filter and 3 years of coverage. Dyson Purifier Big+Quiet Formaldehyde BP03 is the better machine for gas sensing, detecting VOCs, CO2 and formaldehyde, and for filter longevity at up to 5 years.

Sensing depth. Coway Airmega AP-1512HHS reads PM2.5 and shows it on a colour air quality ring. Dyson Purifier Big+Quiet Formaldehyde BP03 adds VOC, CO2 and formaldehyde detection on an LCD, and destroys formaldehyde catalytically instead of trapping it, which nothing else in this price range does.

It depends on the horizon. Coway Airmega AP-1512HHS has a washable pre-filter and HEPA and carbon filters rated at about a year, so it is cheap up front and repeats yearly. Dyson Purifier Big+Quiet Formaldehyde BP03 rates its sealed H13 filter at up to 5 years with a catalytic stage that never needs replacing, but has no washable pre-filter.

No. Coway Airmega AP-1512HHS quotes 210 CFM and 326 sq ft from its own testing, and Dyson publishes no CADR or room size at the AHAM air change rate for the BP03, describing air projection over 32 feet instead. Neither can be compared like for like with AHAM Verifide models.

Coway Airmega AP-1512HHS, which is compact at 12.3 lb and designed to sit beside a bed or in a condo living room. Dyson Purifier Big+Quiet Formaldehyde BP03 stands 830 mm tall and weighs over 26 lb, since it is built to move air across a large open space.

Households worried about formaldehyde from new furniture or flooring, VOCs or rising CO2, and anyone who wants sealed H13 filtration with years between filter changes. It also has a 2 year warranty and a physical remote, though Coway Airmega AP-1512HHS covers you for 3 years at a much lower price.