Medify Air MA-40 Air Purifier: CADR, Noise, Coverage & Specs
Last verified: Aug 23, 2026
Aug 2026
Quick verdict
The Medify Air MA-40 is best suited to large rooms where high airflow are priorities. Its 380 CFM smoke CADR supports about 589 sq ft at approximately 4.8 air changes per hour. Buyers should separately evaluate maximum-speed noise before deciding.
Best for
- Large open rooms
Consider alternatives if
- You need a verified maximum-speed noise figure
- You are planning around the manufacturer coverage claim rather than CADR-based room size
Verified strengths
- 380 CFM smoke CADR (~589 sq ft at ~4.8 ACH)
- 46 dB published minimum noise
- HEPA H14 filtration (as published)
Verified limitations or missing information
- Maximum-speed noise is not in our sources
Medify Air MA-40 overview
The Medify Air MA-40 is a large-room air purifier with a smoke CADR of 380 CFM. Based on our CADR-based room-size method, it is suitable for approximately 589 sq ft. It includes HEPA H14 filtration and 46 dB minimum noise.
- Smoke CADR
- 380 CFM
- Recommended room size
- 589 sq ft
- Claimed coverage
- 1793 sq ft
- Minimum noise
- 46 dB
- Filter type
- HEPA H14
- Power
- 54W
- Weight
- 15.6 lb
- Last verified
- Aug 23, 2026
Medify Air MA-40 CADR and room size
Recommended room size is about 589 sq ft (CADR × 1.55). That is approximately 4.8 air changes per hour in a room with an eight-foot ceiling. The manufacturer figure of 1793 sq ft corresponds to about 1.6 air changes per hour at the same ceiling height and is shown separately. Our recommended room size uses approximately 4.8 air changes per hour with an eight-foot ceiling. Manufacturer coverage figures may use a lower air-change rate and are shown separately.
The manufacturer coverage claim is higher than 3× CADR, so it is not used for ranking.
Medify Air MA-40 noise level
Published minimum noise is 46 dB.
Maximum-speed noise is not in our sources.
Medify Air MA-40 filtration
Published filter type: HEPA H14.
Replacement interval: 4-5 months.
Medify Air MA-40 smart features
True HEPA H14 filter, UV-C light, Touch panel with timer, Three fan speeds
Medify Air MA-40 specifications
- CADR (smoke)
- 380 CFM
- Recommended room size
- 589 sq ft
- Manufacturer claimed coverage
- 1793 sq ft
- Minimum noise
- 46 dB
- Filter type
- HEPA H14
- Filter replacement interval
- 4-5 months
- Power
- 54W
- Weight
- 15.6 lb
About Medify Air air purifiers
Medify Air models in this catalog are compared by CADR, recommended room size, noise, and filter type.
Medify Air MA-40 comparisons
What is the CADR of the Medify Air MA-40?
Smoke CADR is 380 CFM.
What room size is the Medify Air MA-40 suitable for?
About 589 sq ft at approximately 4.8 air changes per hour with an eight-foot ceiling.
How loud is the Medify Air MA-40?
Minimum reported noise: 46 dB.
Does the Medify Air MA-40 have Wi-Fi?
No published Wi-Fi or app control in our sources.
What filter does the Medify Air MA-40 use?
HEPA H14.
Methodology
Specifications are compiled from manufacturer documentation, product listings and other cited sources.
How we calculate recommended room size.
Sources
All air purifiers · Best air purifiers for allergies · Methodology