Data table

Air Purifier CADR & HEPA Data

Clean Air Delivery Rate, HEPA type, coverage and filter cost for every purifier we researched — sortable.

13 rows · Updated 2026-07-17 · Refreshed on model changes · Click a column to sort

The hard numbers behind our allergy air-purifier picks. Every unit's AHAM Verifide CADR (or independently lab-measured PM1 CADR where AHAM has none), HEPA media type, realistic coverage at 5 air changes/hour, and approximate annual filter cost. Sort any column. Marketing "sq ft" claims are excluded in favor of the CADR-derived figure.

	Fine-particle test — best allergy/asthma proxy				CADR is AHAM Verifide (vs. lab-measured or maker claim)		Approximate — verify before publish
Coway Airmega ProX	440 CFM	462 CFM	462 CFM	True HEPA + carbon	—	693 sq ft	$120	$900
Levoit Core 600S	410 CFM	425 CFM	440 CFM	True HEPA + carbon	✓	635 sq ft	$140	$300
Blueair Blue Pure 211i Max	380 CFM	410 CFM	410 CFM	HEPASilent (electrostatic)	—	635 sq ft	$70	$350
Alen BreatheSmart 75i	343 CFM	347 CFM	350 CFM	H13 True HEPA + carbon	✓	650 sq ft	$100	$749
AirFanta 3Pro	340 CFM	353 CFM	353 CFM	True HEPA	—	529 sq ft	$40	$165
Coway Airmega 400	328 CFM	328 CFM	350 CFM	True HEPA + carbon	✓	780 sq ft	$100	$450
IQAir HealthPro Plus	300 CFM	300 CFM	300 CFM	HyperHEPA (to 0.003 micron)	—	300 sq ft	$200	$1099
Coway Airmega 250S	249 CFM	261 CFM	230 CFM	Green True HEPA + carbon	✓	465 sq ft	$68	$300
Levoit Core 400S	235 CFM	225 CFM	242 CFM	True HEPA + carbon	✓	403 sq ft	$85	$220
Coway Airmega AP-1512HH Mighty	233 CFM	246 CFM	240 CFM	True HEPA + carbon	✓	361 sq ft	$50	$230
Winix 5500-2	232 CFM	243 CFM	246 CFM	True HEPA + washable carbon	✓	360 sq ft	$35	$160
Blueair Blue Pure 311i Max	230 CFM	250 CFM	250 CFM	HEPASilent (electrostatic)	—	388 sq ft	$60	$250
Levoit Core 300S	130 CFM	135 CFM	145 CFM	True HEPA + carbon	✓	219 sq ft	$30	$100