Best air purifiers for 250 sq ft and dust

Target smoke CADR 100 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
250 x 8 x 3 / 60 = 100
AHAM 2/3 room-size cross-check: CADR >= 167

Model	Smoke CADR	AHAM room	CARB	Cost/CADR	Annual filter
LEVOIT LAP-C601S-WUSR 294 CADR above target	394	611 sq ft	Check CARB	$0.76	$59.99	Check price
LEVOIT LAP-C601S-AUS 291 CADR above target	391	606 sq ft	Check CARB	$0.77	$59.99	Check price
LEVOIT LAP-C601S-WCA 291 CADR above target	391	606 sq ft	Check CARB	$0.77	$59.99	Check price
LEVOIT LAP-C601S-WUS 291 CADR above target	391	606 sq ft	Check CARB	$0.77	$59.99	Check price
Blueair Blue Signature 355 CADR above target	455	705 sq ft	Matched	$0.99	N/A	Check price
Medify Air MA-112 Pro 500 CADR above target	600	930 sq ft	Check CARB	$0.99	N/A	Check price
Medify Air MA-112 494 CADR above target	594	921 sq ft	Check CARB	$1.00	N/A	Check price
LEVOIT LAP-EL551S-AUS 254 CADR above target	354	549 sq ft	Check CARB	$1.41	N/A	Check price
LEVOIT LAP-EL551S-AUSR 254 CADR above target	354	549 sq ft	Check CARB	$1.41	N/A	Check price
LEVOIT LAP-EL551S-WUSB 254 CADR above target	354	549 sq ft	Check CARB	$1.41	N/A	Check price
LEVOIT LAP-P501S-WUSR 48 CADR above target	148	229 sq ft	Matched	N/A	N/A	Check price
WOZOYO Pure Air PA12 263 CADR above target	363	563 sq ft	Matched	N/A	N/A	Check price
WOZOYO Pure Air PA6 263 CADR above target	363	563 sq ft	Matched	N/A	N/A	Check price
Honeywell (Canada) HPA104C 0 CADR above target	100	155 sq ft	Check CARB	N/A	N/A	Check price
GermGuardian AC4820 3 CADR above target	103	160 sq ft	Check CARB	N/A	N/A	Check price
Lasko HF25630 4 CADR above target	104	161 sq ft	Check CARB	N/A	N/A	Check price
Blue Pure 411 5 CADR above target	105	161 sq ft	Check CARB	N/A	N/A	Check price
LEVOIT LAP-V101-WUSB 5 CADR above target	105	163 sq ft	Check CARB	N/A	N/A	Check price
LEVOIT Vital 100 5 CADR above target	105	163 sq ft	Check CARB	N/A	N/A	Check price
LEVOIT Vital 100-RXW 5 CADR above target	105	163 sq ft	Check CARB	N/A	N/A	Check price
Simply Conserve AM-AP1130-WH 5 CADR above target	105	163 sq ft	Check CARB	N/A	N/A	Check price
Bionaire BAP0041UVWH 6 CADR above target	106	164 sq ft	Check CARB	N/A	N/A	Check price
Bionaire BAP0041UVWH-CNR 6 CADR above target	106	164 sq ft	Check CARB	N/A	N/A	Check price
Bionaire BAP0041UVWH-FC 6 CADR above target	106	164 sq ft	Check CARB	N/A	N/A	Check price
Bionaire BAP0041UVWH-FCR 6 CADR above target	106	164 sq ft	Check CARB	N/A	N/A	Check price