Medify MA-40 HEPA Air Purifier
- 1,600 sq ft in one hour, 840 sq ft in 30 minutes, CADR 380
- HEPA H14, 99.99% of particles to 0.1 microns
- UV light layer
- 46dB to 66dB across 3 fan speeds
- 0-8 hour timer, sleep mode, child lock
- Filter replacement indicator
Last refreshed Sep 8, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A large room HEPA purifier with UV, a timer and child lock. Warranty, filter life and unit size are not stated on this listing.
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ASIN: B09MRQTHG3Model: MA-40 UVCategory: HEPA Air Purifiers
Overview
A fine grade HEPA filter traps particles down to a fraction of a micron while a UV light adds a second stage inside this Medify purifier. A touch panel sets three fan speeds, a timer, sleep mode and a child lock.
Fine grade HEPA filtration and a high clean air rate suit a big living room or open plan space. The highest speed is loud, and this listing leaves out warranty and filter life.
Who it's for
Open living areas, classrooms and offices with allergy or smoke concerns suit one unit. Small bedrooms will not need its capacity.
Pros and cons
- H14 HEPA captures very fine particles
- High clean air delivery rate
- Child lock for kids and pets
- Sleep mode dims panel
- Loud at the highest speed
- Warranty and filter life not listed
- Coverage claim differs in title
Performance notes
Cleaning speed follows the CADR at the top setting, so large rooms clear fastest on high and more slowly on the quiet speeds. The UV stage works alongside the HEPA filter, with particle capture still doing the main work.
Specifications
| Brand | Medify Air |
|---|---|
| Model | MA-40 UV |
| Dimensions & fit | |
| Particle Retention Size | 0.1 microns, 99.99% |
| Capacity & performance | |
| Noise Level | 46dB to 66dB |
| Number of speeds | 3 |
| Construction & materials | |
| Color | White |
| Other details | |
| Floor Area | 1,600 sq ft in one hour, 840 sq ft in 30 minutes |
| Filter Class | HEPA H14 |
| Control Type | Touch panel |
| Cadr | 380 |
| Special Features | UV light, 0-8 hour timer, sleep mode, child lock, filter indicator |
Frequently asked questions
Why does the Medify MA-40 title say 0.3 microns?
The title says removal to 0.3 microns, while the bullets say H14 filtration removes 99.99% of particles down to 0.1 microns.
Can kids change the Medify MA-40 settings?
The touch panel has a child lock to prevent changes.