Best air purifiers for 800 sq ft and allergies

Target smoke CADR 427 using 4 ACH and an 8 ft ceiling. Results come from AHAM Verifide CADR rows; CARB matches are marked when found.

Required smoke CADR = sqft x ceiling height x ACH / 60
800 x 8 x 4 / 60 = 427
AHAM 2/3 room-size cross-check: CADR >= 534

Model	Smoke CADR	AHAM room	CARB	Cost/CADR	Annual filter
Blueair Blue Signature 28 CADR above target	455	705 sq ft	Matched	$0.99	N/A	Check price
Medify Air MA-112 Pro 173 CADR above target	600	930 sq ft	Check CARB	$0.99	N/A	Check price
Medify Air MA-112 167 CADR above target	594	921 sq ft	Check CARB	$1.00	N/A	Check price
Lichen Air Lichen Air 7 CADR above target	434	673 sq ft	Check CARB	N/A	N/A	Check price
Blueair 3613111100 (Pure Blue 211i Max) 8 CADR above target	435	674 sq ft	Check CARB	N/A	N/A	Check price
Blueair 7711371000 (7710i US) 8 CADR above target	435	674 sq ft	Check CARB	N/A	N/A	Check price
Blueair 7711371000 (7710i) 8 CADR above target	435	674 sq ft	Check CARB	N/A	N/A	Check price
Blueair 7721371000 (7710i) 8 CADR above target	435	674 sq ft	Check CARB	N/A	N/A	Check price
Airhub A800 19 CADR above target	446	691 sq ft	Check CARB	N/A	N/A	Check price
Winix XLC 19 CADR above target	446	691 sq ft	Check CARB	N/A	N/A	Check price
Blueair 590i (Model Discontinued - Filter Available) 23 CADR above target	450	698 sq ft	Check CARB	N/A	N/A	Check price
Lux LACH-2 Hera 23 CADR above target	450	698 sq ft	Check CARB	N/A	N/A	Check price
Lux LACS-1 Aura 23 CADR above target	450	698 sq ft	Check CARB	N/A	N/A	Check price
Blueair 4312111000 (Blue Signature) 28 CADR above target	455	705 sq ft	Check CARB	N/A	N/A	Check price
Blueair 4312112000 28 CADR above target	455	705 sq ft	Check CARB	N/A	N/A	Check price
Blueair 4332111000 28 CADR above target	455	705 sq ft	Check CARB	N/A	N/A	Check price
Blueair 4332112000 28 CADR above target	455	705 sq ft	Check CARB	N/A	N/A	Check price
Blueair 4342211000 28 CADR above target	455	705 sq ft	Check CARB	N/A	N/A	Check price
Blueair 4342212000 28 CADR above target	455	705 sq ft	Check CARB	N/A	N/A	Check price
CUCKOO CAC-AH2810FNW 28 CADR above target	455	705 sq ft	Check CARB	N/A	N/A	Check price
Winix Tower XQ 34 CADR above target	461	714 sq ft	Check CARB	N/A	N/A	Check price
Winix XQ Pro 34 CADR above target	461	714 sq ft	Check CARB	N/A	N/A	Check price
CUCKOO CAC-F3010FW 89 CADR above target	516	800 sq ft	Check CARB	N/A	N/A	Check price
Fellowes AeraMax SV 90 CADR above target	517	801 sq ft	Check CARB	N/A	N/A	Check price
Field Controls TRIO Pro 91 CADR above target	518	804 sq ft	Check CARB	N/A	N/A	Check price