| Doctor Recommended for Allergen Reduction | For General Air Cleaning |  | True HEPA Allergen Remover | HEPAClean | QuietClean | AirGenius | Smoke |  | |  |  |  |  | Pollen |  | |  |  |  |  | Dust |  | |  |  |  |  | Pet Dander |  | |  |  |  |  | Mold Spores |  | |  |  |  |  | Germs |  | |  |  |  |  | Odors |  | |  |  |  |  | VOCs |  | |  |  |  |  | *Purchase "K" pre-filter for QuietClean Odor and VOC Reduction | 2. Choose your room size     Length x Width = Total Square Feet  | True HEPA Allergen Remover | HEPAClean | QuietClean | AirGenius | Small 51-99 sq. ft. |  |  |  |  | Medium 100-145 sq. ft. |  |  |  |  | Medium-Large 146-199 sq. ft. |  |  |  |  | Large 200-349 sq. ft. |  |  |  |  | Extra Large 350+ sq. ft. |  |  |  |  | 3. Find the right replacement filter  | True HEPA Allergen Remover | HEPAClean | QuietClean | AirGenius | Pre-filters captures large particles/reduces odors |  |  |  |  | Medium captures allergens/ small particles |  |  | Permanent Washable | Permanent Washable |  |