There are a lot of air purifiers out there today that have loads of fancy features — air quality monitoring, app control, beautiful designs, and more.
The Medify Air MA-25 is not that kind of air purifier. It’s a boxy, white little monolith that doesn’t connect to your Wifi, won’t tell you the AQI, and won’t serve as a conversation piece in your home.
What it will do is purify your air very, very well.
That’s why the MA-25 is our top pick for a medium-sized air purifier. You can buy one on Amazon at a great price.
Here’s why we love the MA-25, and how it performed in our testing.
Features of the MA-25
As its name implies, Medify Air’s purifiers are designed to be used in medical settings. They’re not the FDA-cleared purifiers used in clean rooms, but you’re very likely to find one in your doctor’s waiting room or exam room. I originally discovered MA-25 because my dentist was using it.
Medify’s big advantage is that they use H13 filters instead of the standard HEPA filters found in many purifiers. The company calls the H13 a “medical grade” filter. Whereas a traditional HEPA removes particles down to .3 microns, H13 filters remove 99.9% of particles down to .1 microns.
That’s small enough to handle wildfire smoke, pet dander, allergens, and even the droplets that carry bacteria and viruses. It also means the MA-25 powers through larger particulates like dust.
And because the purifier is so basic — essentially two filters in a box with a fan — it’s reasonably priced, despite its power.
Here’s the basic setup:
- It has a simple glass-style touchscreen on the top to turn it on and switch the speed.
- There are three different speed settings, with the highest setting being particularly powerful.
- The outflow is in the front, drawing air in through the two HEPA filters on the sides.
Other functions include a child lock so that your kid won’t be able to press the lighted buttons, a timer so that you can set it to run for a certain time period, and a dimmer switch to reduce the light when it’s running.
How Big of a Room Will the MA-25 Clean?
The MA-25 is perfect for a medium-sized room of around 500 square feet. It will clean the air in a 500-square-foot room once every thirty minutes.
You can use the MA-25 in a larger room up to about 1,000 square feet, but in that case, it will only clean the air about once per hour. For smaller rooms, it’s overkill but will do a great job of cleaning the air.
Is the MA-25 Ozone Free?
Among the features that the MA-25 lacks is an ion generator. That’s actually a good thing, since ionization risks creating ozone, which can be potentially harmful.
The MA-25 is ozone free. It doesn’t need ozone to clean your air very well.
Real World Test: Wildfire Smoke
We, unfortunately, had the opportunity to test the MA-25 in a smoky environment during the California wildfires in 2020. As wildfires caused smoke to billow down into the Bay Area where I’m based, the AQI inside my home reached 90 — a potentially unhealthy level.
I went into a 250-square-foot room and ran the MA-25 at full blast, monitoring the AQI using a Temptop P10 air quality monitor.
After about 20 minutes, the AQI had dropped to around 20 — a healthy level. The Medify Air MA-25 genuinely worked to clean out the smoke particles from the air.
Reviews from Our Readers
We’ve tested the MA-25 for two years now. That’s given us a chance to get lots of feedback from our readers, and from people who watched the video review on our YouTube channel.
Here are a few reader perspectives on the MA-25:
- John Parkhurst writes, “Just got mine !! My buddy is a dentist and he told me about them and they a perfect for cat allergies! I used mine and on a low setting it works perfect”
- Brian Miller writes, “I’ve got two dogs and with the dual filters I’ll put it right between them to clean out bedroom.”
Our Ratings
Overall, here’s how we rate the MA-25.
- Filtration: 5/5
- Price: 4/5
- Ease of Use: 4/5
- Design: 3/5
- Smart Features: 1/5