The Best Air Purifiers For Clean Air In Your Home- air co sanitizer ,Pros: PECO filter 1,000 times more effective than HEPA, stylish Cons: Expensive This is the priciest air purifier on the list, but for serious allergy-sufferers, it may well be a worthwhile ...Air Purifiers & Filters | CostcoGermGuardian 4-in-1 360 Degree Air Purifier with True HEPA Filter and UV Light Sanitizer. True HEPA air filter reduces up to 99.97% of allergens including dust, pet dander, mold spores and odor; Compact 15 inch air purifier filters air 4.8x per hour in rooms up to 150 square feet. CADR Rating: Dust (106) Pollen (106) and Smoke (97)