Best air purifiers for 300 sq ft and dust

Target smoke CADR 120 using 3 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
300 x 8 x 3 / 60 = 120
AHAM 2/3 room-size cross-check: CADR >= 200

Model	Smoke CADR	AHAM room	CARB	Cost/CADR	Annual filter
LEVOIT LAP-C601S-WUSR 274 CADR above target	394	611 sq ft	Check CARB	$0.76	$59.99	Check price
LEVOIT LAP-C601S-AUS 271 CADR above target	391	606 sq ft	Check CARB	$0.77	$59.99	Check price
LEVOIT LAP-C601S-WCA 271 CADR above target	391	606 sq ft	Check CARB	$0.77	$59.99	Check price
LEVOIT LAP-C601S-WUS 271 CADR above target	391	606 sq ft	Check CARB	$0.77	$59.99	Check price
Blueair Blue Signature 335 CADR above target	455	705 sq ft	Matched	$0.99	N/A	Check price
Medify Air MA-112 Pro 480 CADR above target	600	930 sq ft	Check CARB	$0.99	N/A	Check price
Medify Air MA-112 474 CADR above target	594	921 sq ft	Check CARB	$1.00	N/A	Check price
LEVOIT LAP-EL551S-AUS 234 CADR above target	354	549 sq ft	Check CARB	$1.41	N/A	Check price
LEVOIT LAP-EL551S-AUSR 234 CADR above target	354	549 sq ft	Check CARB	$1.41	N/A	Check price
LEVOIT LAP-EL551S-WUSB 234 CADR above target	354	549 sq ft	Check CARB	$1.41	N/A	Check price
LEVOIT LAP-P501S-WUSR 28 CADR above target	148	229 sq ft	Matched	N/A	N/A	Check price
WOZOYO Pure Air PA12 243 CADR above target	363	563 sq ft	Matched	N/A	N/A	Check price
WOZOYO Pure Air PA6 243 CADR above target	363	563 sq ft	Matched	N/A	N/A	Check price
Honeywell HPA830W 0 CADR above target	120	190 sq ft	Check CARB	N/A	N/A	Check price
Honeywell (Canada) HPA830WC 0 CADR above target	120	190 sq ft	Check CARB	N/A	N/A	Check price
Blueair Blue Pure 511 (3131000000) 2 CADR above target	122	189 sq ft	Check CARB	N/A	N/A	Check price
Blueair 3231101000 (Blue 3210) 3 CADR above target	123	190 sq ft	Check CARB	N/A	N/A	Check price
Blueair 3231101000 (Blue Pure 411 Auto) 3 CADR above target	123	190 sq ft	Check CARB	N/A	N/A	Check price
IKEA E2007 3 CADR above target	123	190 sq ft	Check CARB	N/A	N/A	Check price
Honeywell HHT290WHD 4 CADR above target	124	190 sq ft	Check CARB	N/A	N/A	Check price
Honeywell HPA5100B 5 CADR above target	125	190 sq ft	Check CARB	N/A	N/A	Check price
Honeywell HPA5100W 5 CADR above target	125	190 sq ft	Check CARB	N/A	N/A	Check price
Lasko LP450S 6 CADR above target	126	195 sq ft	Check CARB	N/A	N/A	Check price
Midea CAF-A40US(H) 7 CADR above target	127	198 sq ft	Check CARB	N/A	N/A	Check price
Midea CAF-Z40US(H) 7 CADR above target	127	198 sq ft	Check CARB	N/A	N/A	Check price