
Genuine MA-40 replacement filters should be used to maintain the effectiveness of the MA-40 air purifier unit. Removes 99.9% of harmful toxins including allergens, odors, VOCs, smoke, pollen, pet dander, dust, smog, contaminants, and more down to 0.1 microns in size. Perfect for clean air in bedrooms, baby nurseries, living rooms, home gyms, kitchens, offices, and more. Maintain your purifier's Lifetime Warranty by replacing the MA-40 filter every 4-5 months or after 3,000 hours of use, whichever comes first.
Filter life:
4-5 months or 3,000 hours
Medify Air True HEPA H13 & H14 Filters
The Medify Air MA-40 uses True HEPA H13 filters with three layers of filtration: pre-filter, H13 True HEPA, and active carbon composite for odors.

Can clean up to 840 SF in 30 minutes*
330m3/h Clean Air
Delivery Rate†
Captures up to 99.9% of particles down to 0.1 microns
Only H13 or better removes 99.9% of particles down to 0.1 microns

Compare Our Units
All units are equipped with pre-active carbon and HEPA H13 or H14 filters.
![]() MA-CAR |
![]() MA-14 |
![]() MA-15 |
![]() MA-18 |
![]() MA-22 |
![]() MA-25 |
![]() MA-35 |
![]() MA-40 |
![]() MA-45 |
![]() MA-50 |
![]() MA-112 |
![]() MA-125 |
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Max CADR† †Average CADR for pollen, smoke, and dust |
20m3/h (12 CFM) |
120m3/h (71 CFM) |
144m3/h (85 CFM) |
150m3/h (88 CFM) |
160m3/h (94 CFM) |
230m3/h (135 CFM) |
290m3/h (171 CFM) |
380m3/h (224 CFM) |
350m3/h (206 CFM) |
510m3/h (300 CFM) |
950m3/h (559 CFM) |
930m3/h (547 CFM) |
Coverage | 80 sq. ft. every 30 min.* | 200 sq. ft. every 30 min.* | 330 sq. ft. every 30 min.* | 330 sq. ft. every 30 min.* | 330 sq. ft. every 30 min.* | 500 sq. ft. every 30 min.* | 640 sq. ft. every 30 min.* | 840 sq. ft. every 30 min.* | 772 sq. ft. every 30 min.* | 1,100 sq. ft. every 30 min.* | 2,500 sq. ft. every 30 min.* | 2,051 sq. ft. every 30 min.* |
Colors | Black | White, Black | White, Silver | White, Black | White, Black | White, Silver, Black | White, Silver, Black | White, Black | White, Black | White, Silver, Black | White, Black | White, Black |
Option with UV Light |
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Option with Ionizer |
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Fan Speeds | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 4 | 4 | 4 | 9 |
Customer Rating | ||||||||||||
Price | $99 | $89 | $119 | $95 | $119 | $160 | $275 | $270 | $400 | $325 | $595 | $695 |

What is an air purifier?
What is indoor air quality?
What is a HEPA filter?
HEPA is a type of pleated mechanical air filter. It is an acronym for "high-efficiency particulate air [filter]" (as officially defined by the U.S. Dept. of Energy). This type of air filter can theoretically remove at least 99.97% of dust, pollen, mold, bacteria, and any airborne particles with a size of 0.3 microns (µm). *Source: epa.gov, What is a HEPA filter?
How does it work?
Why are Medify Air filters special?


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