Best air purifiers for 1000 sq ft and allergies

Target smoke CADR 534 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
1000 x 8 x 4 / 60 = 534
AHAM 2/3 room-size cross-check: CADR >= 667

Model	Smoke CADR	AHAM room	CARB	Cost/CADR	Annual filter
Medify Air MA-112 Pro 66 CADR above target	600	930 sq ft	Check CARB	$0.99	N/A	Check price
Medify Air MA-112 60 CADR above target	594	921 sq ft	Check CARB	$1.00	N/A	Check price
Jafanda JF999 14 CADR above target	548	849 sq ft	Check CARB	N/A	N/A	Check price
Airhub A990 22 CADR above target	556	862 sq ft	Check CARB	N/A	N/A	Check price
Medify Air MA-112 V3.0 27 CADR above target	561	869 sq ft	Check CARB	N/A	N/A	Check price
Medify Air MA-1000 66 CADR above target	600	930 sq ft	Check CARB	N/A	N/A	Check price
Medify Air MA-1000 V2.0 66 CADR above target	600	930 sq ft	Check CARB	N/A	N/A	Check price