Blueair Blue Pure 211i Max vs Coway Airmega AP-1512HHS

Coway Airmega AP-1512HHS wins for most buyers on value, filtration depth and a 3 year warranty. Blueair Blue Pure 211i Max is the better machine for large rooms, with an AHAM Verifide 435 CFM smoke CADR against the Coway's 210 CFM and three-size particle reporting instead of PM2.5 alone.

The filter technology. Coway Airmega AP-1512HHS uses a conventional True HEPA membrane behind a washable pre-filter and a carbon layer, with an optional PlasmaWave-style ionizer. Blueair Blue Pure 211i Max uses HEPASilent, an electrostatic and mechanical hybrid designed for low airflow resistance, which is how it reaches a much higher clean air delivery rate.

Only Blueair Blue Pure 211i Max. Its 435 CFM smoke CADR and 674 sq ft rating were measured under the AHAM standard, so they can be compared like for like. Coway Airmega AP-1512HHS is not AHAM Verifide, so its 788 sq ft claim comes from Coway's own testing at a lower air change rate.

Coway Airmega AP-1512HHS is the more natural bedroom choice: it is compact, very quiet on its two lowest speeds and adds an Eco Mode that stops the fan once the air stays clean. Blueair Blue Pure 211i Max also has a Night mode with dimmable lights, but it is a large cylinder that needs floor space.

No. Blueair Blue Pure 211i Max reports PM1, PM2.5 and PM10, and Coway Airmega AP-1512HHS reports PM2.5 through an air quality ring. Neither detects VOCs, CO2 or formaldehyde, so odors are handled by the carbon layer without any reading to show for it.

Anyone clearing a large or open-plan space, especially during wildfire smoke season, who wants certified airflow numbers and detailed particle data. It is Energy Star certified at 46 W and its filter is rated for 9 months with a washable pre-filter, though the warranty is only 1 year against the 3 years on Coway Airmega AP-1512HHS.