- SKU: MA-40E-4
- Availability: in stock Many in stock Out of stock You can purchase this product but it's out of stock
MA-40 Replacement Filter
I NEED HELP CHOOSING MY FILTER
High-grade HEPA filtration (H13) that removes 99.9% of airborne particles down to 0.1 microns.
True HEPA H14 with Antibacterial MaterialA higher grade of HEPA (H14) made with special antibacterial material. Removes 99.99% of airborne particles down to 0.1 microns.
- Vendor: Medifyair
- Product Type: Air Purifier Filter
- Barcode: 860001656480
Tested to Remove 99.99% of Particles
Related to COVID-19 (ARE Labs)
The MA-40 product was tested with MS2 an accepted surrogate of the virus responsible for COVID-19, in a 579 cubic foot space at the highest product setting. Independent lab testing was performed by Aerosol Research and Engineering Laboratories Inc., in consult with Intertek Assurance*.
MA-40 Replacement Filter
The MA-40 product was tested with MS2 an accepted surrogate of the virus responsible for COVID-19, in a 579 cubic foot space at the highest product setting. Independent lab testing was performed by Aerosol Research and Engineering Laboratories Inc., in consult with Intertek Assurance*.
Learn more

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
330 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

1. Pre-Filter
Pre-filter removes hair, fibers, and large particles like dander.
2. True HEPA H13 or H14 Filter
The high-efficiency TRUE HEPA H13 filter is tested to removed 99.9% of particles down to 0.1 microns. Upgrade to H14 for 99.99% removal.
3. Substantial Carbon Filter
Substantial carbon filter with carbon pellets remove toxic odors, smoke, and formaldehyde.

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?


Bundle & Save
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CREATE YOUR BUNDLECompare 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) |
150m3/h (88 CFM) |
150m3/h (88 CFM) |
150m3/h (88 CFM) |
250m3/h (147 CFM) |
290m3/h (171 CFM) |
380m3/h (224 CFM) |
350m3/h (206 CFM) |
500m3/h (294 CFM) |
950m3/h (559 CFM) |
950m3/h (559 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 |
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Option with Ionizer |
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Fan Speeds | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 9 | 4 | 4 | 9 |
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Price | $99 | $89 | $119 | $95 | $119 | $160 | $275 | $270 | $400 | $325 | $595 | $695 |
SIZE GUIDE
This is an approximate conversion table to help you find your size.Italian | Spanish | German | UK | US | Japanese | Chinese | Russian | Korean |
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34 | 30 | 28 | 4 | 00 | 3 | 155/75A | 36 | 44 |
36 | 32 | 30 | 6 | 0 | 5 | 155/80A | 38 | 44 |
38 | 34 | 32 | 8 | 2 | 7 | 160/84A | 40 | 55 |
40 | 36 | 34 | 10 | 4 | 9 | 165/88A | 42 | 55 |
42 | 38 | 36 | 12 | 6 | 11 | 170/92A | 44 | 66 |
44 | 40 | 38 | 14 | 8 | 13 | 175/96A | 46 | 66 |
46 | 42 | 40 | 16 | 10 | 15 | 170/98A | 48 | 77 |
48 | 44 | 42 | 18 | 12 | 17 | 170/100B | 50 | 77 |
50 | 46 | 44 | 20 | 14 | 19 | 175/100B | 52 | 88 |
52 | 48 | 46 | 22 | 16 | 21 | 180/104B | 54 | 88 |
SHIPPING
- Complimentary ground shipping within 1 to 7 business days
- In-store collection available within 1 to 7 business days
- Next-day and Express delivery options also available
- Purchases are delivered in an orange box tied with a Bolduc ribbon, with the exception of certain items
- See the delivery FAQs for details on shipping methods, costs and delivery times
RETURNS AND EXCHANGES
- Easy and complimentary, within 14 days
- See conditions and procedure in our return FAQs