Medify MA-15 Review: Improved Efficiency with Double Filter

The dual filtration system and a True HEPA filter are everything you need from an air purifier. I tested the performance of the Medify MA-15.

Our Verdict





Operating cost


Value for money


Ease of use




The Medify MA-15 is a compact air purifier with limited features but equipped with a dual 3-in-1 filter. The filter is consisting of a pre-filter, a True HEPA filter, and an activated carbon filter.

It’s suitable for small rooms up to 138 sq. ft. (12.8 m²) and will purify the air 4.8 times per hour in such spaces. I would use it in a small bedroom, kids’ room, office, or other small areas.

I can’t say it has a high airflow or an impressive power-to-CADR ratio, especially when compared to some competitive air purifiers, such as the Levoit Core 300S, which uses a nearly identical power motor but has almost double the coverage.

It’s also worth noting that the Medify MA-15 is initially an affordable device, but the cost of replacement filters is somewhat high, despite it using a dual filter system.

Overall, this is a compact air purifier worth considering, especially if you’re looking for a device for small rooms. I also suggest scrolling down to read a full review for better context and an in-depth overview of this air purifier.

What we really like?

  • The Medify MA-15 uses dual filters that are located on the sides. Each filter includes a pre-filter, a True HEPA filter, and an activated carbon filter.

  • It consumes minimal power, is Energy Star certified, and has a CARB certification, confirming it’s safe to use. It doesn’t produce ozone.

  • In performance tests, the Medify MA-15 achieved excellent results. In a 194 sq. ft. room, it improved air quality by 92%.

  • The Medify MA-15 is energy-efficient, with a motor of just 25W, and operates very quietly, especially at low fan speeds.

  • I spoke with Medify support a few times and have always got fast and descriptive responses with direct answers to my questions.

What could be better?

  • It comes with a lifetime warranty, but only if you activate a replacement filters subscription through the Medify website.

  • The price of replacement filters is somewhat high, which is a huge cost if considered a very low filter lifetime.

  • The Medify MA-15 has a coverage area of only 138 sq. ft. (12.8 m²), which may seem too small for its price range.

Smoke Test Performance

Medify MA-15 Air Purifier - Smoke Test
The Medify MA-15 needed 32s to remove all the smoke from the smoke box. Photo: / Milan Antonic


Dimensions (inches / cm)7.5 x 7.5 x 12.2 inches (19.1 x 19.1 x 31 cm)
Weight (pounds / kg)5.89 lb (2.67 kg)
Clean Air Delivery Rate (CADR)-
Filtration TechnologyPre-filter, True HEPA Filter, and Activated Carbon Filter
Filter Replacement IndicatorYes
Filter Life3-4 months
Number of Fan Speeds3 – Speed 1, Speed 2, and Speed 3
Air Quality Sensor No
Air Quality IndicatorNo
Auto Mode No
Smart App No
Voice Control No
Other FeaturesN/A
Coverage (4.8 ACH) 138 sq. ft. (12.8 m²)
Performance Ratings
Power Consumption 25W
Operating Costs Ratings
Noise Level (low – high)41.2 – 61.1 dBA
Noise Ratings
Best Suited For
WarrantyLifetime (conditioned)

Full Review

In this review, I will test and evaluate the Medify Air MA-15 air purifier. Medify Air is a brand that makes air purifiers of various sizes for multiple purposes and for rooms of different sizes.

So far, I have not tested any air purifiers from this brand. I opted for the MA-15 model because it seems like a perfect option and a competitor to many air purifiers designed for rooms of similar dimensions. Medify Air MA-15 is designed for rooms up to 138 sq. ft. (12.8 m²).

Medify Air MA-15 - Air Purifier Review
I placed the Medify MA-15 on the desk. Photo: / Milan Antonic

Medify MA-15 uses 2 identical filters, which are placed on the sides. The MA-14 model is similar to the MA-15, but at first sight, you can see that the MA-15 is more advanced considering the airflow and obviously overall performance. Because of the specifications, I decided to review the successor and the somewhat more powerful MA-15 model.

How good it really is, how much it helps to use two filters, and whether it can handle everyday conditions, I will write in the review below.


Medify MA-15 is a small, compact air purifier, rectangular in shape.

It is available in silver and white color. For this review, I bought a device in silver because it is unusual, unusual, and in my opinion, more beautiful than the model in white color.

Medify Air MA-15 Air Purifier - Positioned on the Desk
The Medify MA-15 on the office desk. Photo: / Milan Antonic

The device I am testing is entirely silver, except for the frame on the upper side, which is black. I don’t like that on some parts of the device, you can see traces of paint underneath. The device is not very well painted in silver color. For example, the Smartmi P1 that I recently tested is also available in silver, but the color is much better; the difference is very noticeable.

In my opinion, it would be good if the designers installed handles for easier carrying. Still, since this is not a giant air purifier, you probably won’t have any problems transporting it from room to room. The plastic is not top quality, but that is not a big deal.

All in all, this air purifier is one very lovely device, which will fit into almost any ambiance. It will fit nicely on a desk, dresser, nightstand in the bedroom, or in a similar location.

Control Buttons

The device control buttons are located on the top. Touch buttons are well responsive even on the slightest pressure. Each time you press the button, you will hear a beep.

Medify Air MA-15 Air Air Purifier - Controls
Medify MA-15 has control buttons located on the top. Photo: / Milan Antonic

In my opinion, the buttons are kind of small, so sometimes it happens that I don’t press the correct button.
There are Child-Lock, Timer, On / Off, Speed ​​, and Dimmer button on the button bar.


The MA-15 has openings on the sides. The device draws in air through these openings, which is then filtered and exits through the openings on the upper side. The device draws air through openings on the sides because the two filters it uses are arranged there.

When placing the device in the desired location, be sure to move it at least 6 inches away from the wall or other objects.

Size and dimensions

The Medify MA-15 air purifier weighs 5.8 lb. The low weight allows you to move the air purifier from one location to another without a problem. The dimensions of the device are 8.9 x 8.9 x 14.6 inches.

What’s in the box?

When you buy the device, you get Medify Air MA-15,1x AC Power Adapter, True HEPA Filters, and a User manual.

Packaging is standard cardboard packaging. The filters are immediately inserted into the device. However, it is necessary to remove the plastic bag and reinstall them before the first start.

Medify Air MA-25 Honeywell HPA100 Levoit Vital 100S Related reviews

Features Overview

The Medify Air MA-15 has a “Timer” as an optional extra option. The timer can be set to 1x, 2x, 4x, or 8x hours. This is a valuable option if you need to set the device to turn off after a certain amount of time.

Medify Air MA-15 - Features
It has all the features you will need for everyday use. Photo: / Milan Antonic

Child Lock

This is also a handy option, especially if you have a small child.

Namely, after the Child-Lock is activated, the air purifier will not react to any button’s pressure.

Holding your finger on the Child-Lock button for 3s will activate it. Likewise, a 3s re-hold will deactivate it.


Press the Dimmer button to change the backlight to a certain brightness.

There are 4 brightness levels to choose from. Each time you press the Dimmer button, the level changes. Also, in addition to the 4 lighting levels, it is possible to completely dim the lights on the buttons. All you have to do is keep pressing the Dimmer button until all lights are off.

Filter Replacement Indicator

This is one of my favorite options that an air purifier can have. The filter replacement indicator makes it much easier to use the device by notifying you when it is time to replace the filter. This way, you don’t have to manually track when it’s time to replace filters, but you can entirely rely on the indicator.

Room Coverage and CADR

Medify MA-15 is a slightly smaller device, but it has excellent performance thanks to a powerful motor. MA-15 is designed for rooms up to 138 sq. ft. (12.8 m²). This device will clean the air in a room of 165 sq. ft. in just 15 min, while in a room of 330 sq. ft. the air is clean in about 30min.

These are laboratory results listed by the manufacturer. However, users will not always use the device in ideal conditions, so I suggest you keep on reading the Medify MA-15 review, where I will write more about the performance and other tests I did on this outstanding air purifier.

Filtration Technology

Medify Air MA-15 uses 3 stage filtration. The device uses two identical filters, which are placed on both sides. You can find this identical filtration principle on the Levoit LV-H128 model, which I had the opportunity to test recently. What I really like about MA-15 is that it uses a True HEPA filter.

Medify Air MA-15 Air Purifier - Filtration
I pulled out the filters from the device, so you can see what they look like. Photo: / Milan Antonic
Medify MA-15 Air Purifier - Replacement Filter

Medify Air MA-15 Replacement Filters

Always buy genuine filters for the best performance. As soon as the filter reset indicator is on, you are ready to change filters. Do it as quickly as possible.

Check Filter Price On Amazon


The first stage of filtration in the MA-15 is the pre-filter. It is a nylon mesh attached to a True HEPA filter. Its purpose is to capture large particles and thus extend the life of the HEPA filter.

This pre-filter type is very common in Levoit models such as the Core 300, where the pre-filter is also attached to the HEPA filter.

True HEPA H13 Filter

The second stage of filtration is the True HEPA filter. This filter has the power to remove up to 99.9% of airborne particles as small as 0.1 microns, such as allergens, pollen, dust, germs, pet dander, odor, mold spores, and smoke from the air that passes through the filter.

I really like that the MA-15 uses a True HEPA filter, as many devices on the market do not have True HEPA filters.

Carbon Odor Filter

The third stage of filtration is the carbon filter. Its purpose is to eliminate household odors and VOCs (volatile organic compounds) gases as shown by independent laboratory testing.

Medify MA-15 uses carbon pellets. However, the amount of pellets in the filter is very small, and they are not densely arranged at all. I don’t like that at all, and I think that’s why the gas filtration is a bit weaker with this device.

The MA-15 would be a much more complete and better device if it had a carbon filter in line with the quality of True HEPA filters.

How to Replace Medify Air MA-15 Filters?

The filters on the MA-15 are not washable, so they need to be changed at a certain time. With this model, the filter will last about 2500 hours, approximately 3-4 months.

The good thing is that the Medify MA-15 has a built-in filter replacement indicator, which will notify you when it’s time to replace the filter. Besides, I would recommend that you clean the inside of the device at least once a month and remove the dirt accumulated on the pre-filter.

Total time: 10 minutes.

Step 1

Unplug the air purifier. Remove filter cover on both sides by pushing the lockers on top of the cover.

Remove filter cover on both sides by pushing the lockers on top of the cover.

Step 2

Once you see the filter pull the tabs to remove it.

Once you see the filter pull the tabs to remove it.

Step 3

Before installing a new filter, you can use a vacuum cleaner on the insides of the air purifier to remove any accumulated dust. A new filter needs to be installed with the white side facing out.

Use a vacuum cleaner on the insides of the air purifier to remove any accumulated dust

Step 4

Put back the filter cover and seal it well.

Put back the filter cover and seal it well.

Step 5

Plug the device, start it and reset the filter indicator by pressing and holding the Dimmer button for 3 seconds.

Reset the filter indicator by pressing and holding the Dimmer button for 3 seconds

Noise Test

Medify MA-15 uses 3 fan speeds. The motor has a vast airflow. I can say that I was a little surprised about it, considering that this air purifier is not that big.

Medify Air MA-15 Air Purifier - Noise Test
I used a special tool to test Medify MA-15 noise levels. Photo: / Milan Antonic

The biggest airflow is at the third speed, which is also the loudest speed, so it will be a problem for many users to use the device constantly at the highest speed. The first and second speeds are much quieter, and it is much easier to stay indoors if the machine is running at either of these two speeds.

Speed Value (dBA)
Speed 1 41.2 dBA
Speed 2 47.1 dBA
Speed 3 61.1 dBA

My complaint is that the MA-15 has no sleep mode. However, at the first speed, it produces 41.2 dBA of sound, which is as low as some competing devices in sleep mode. Also, the Dimmer button can be used to dim all the lights on the device, and in this way – in combination with the first fan speed we can get something similar to what we would get with sleep mode.

Performance Tests

Medify Air MA-15 air purifier is a small device, but it is nevertheless intended for rooms up to 138 sq. ft. (12.8 m²).

Medify MA-15 Air Purifier - Performance Test
I used a laser particle meter to test Medify MA-15 performance. Photo: / Milan Antonic

Many, much larger devices, such as the Winix C535 or Hathaspace HSP001, are designed for rooms of similar dimensions but are also several times larger than the MA-15. Given the specifications, I tested it in the recommended dimensions, and I was pleasantly surprised by its efficiency. I am glad that one smaller device can produce so much airflow and make solid performance. Below I will show the tests in two separate rooms where I tested the Medify MA-15 air purifier.

194 sq. ft. Room Test

I tested the MA-15 in a 194 sq. ft. room. This room is slightly smaller than recommended. I tested the device for 60min, the air purifier worked all the time at the highest speed.

# Starting Baseline After 60min
PM 2.5 98.9 7.6
PM 10 138.5 10.6
Particles 143521 11038
AQI 129 10

During that time, the MA-15 improved room air quality by about 92%, lowering the AQI from 129 to 10. This is an excellent result, and I can say that I am positively surprised.

320 sq. ft. Room Test

I also put the device to the tests in a 320 sq. ft. room. And in this room, the device was running at third speed all the time.

# Starting Baseline After 60min
PM 2.5 96.8 10
PM 10 135.5 14.1
Particles 140366 14604
AQI 127 13

In just 60 minutes, the device lowered AQI from 127 to 13, thus improving air quality by about 90%. This is also an outstanding result and just as unexpected as in the previous test. The MA-15 is one compelling device by all accounts, which didn’t let me down on performance tests.

Operating Costs

Medify Air MA-15 air purifier uses a very small motor, which has a power of only 25W. The device uses an AC adapter, which comes in the purchase box.

Medify Air MA-15 - Operating Costs
The Medify MA-15 uses a well-optimized motor of just 25W. Photo: / Milan Antonic

Air purifiers do not normally consume much electricity, and that is also the case with this device. If you leave the Medify MA-15 running for 24 hours non-stop, at top speed, and so on for a month, you will pay about $ 2. This is not such a high figure, especially considering that you will not be using the device at the highest speed all the time.

Speed Power Usage (W)
Standby 0.9W
Speed 1 2.2W
Speed 2 5.3W
Speed 3 23.7W

Slightly higher costs are replacement filters, which in my opinion are too expensive. Another problem besides the cost of replacement filters is the frequent replacement of filters. Namely, it is recommended to change the filters on average between 3-4 months.

Although the MA-15 is not a large energy consumer, the cost of replacement filters and frequent replacement leads to the MA-15 having slightly higher maintenance costs on an annual basis overall.

Medify Air Warranty and Customer Service

At first glance, the lifetime warranty offered by Medify Air is very tempting and sounds just amazing. However, I don’t like that this warranty is conditioned in some way. To be valid, the manufacturer “forces” you to change the filters every three months and always use original filters, which are not cheap at all.

Also, 30 days from the product’s purchase, you need to register it on their webshop and thus start your warranty. My recommendation is to read the warranty agreement and, therefore, better understand how the Medify Air warranty works.

In addition to the warranty, customer support, and the way the company treats customers are very important. I tested the support via email and via the Facebook page. I am satisfied with the speed of response I received through both channels.

FAQ on Medify MA-15

Does Medify Air MA-15 produce ozone?

No. Medify MA-15 does not use an Ionizer, UV-C, or any other form of filtration that could produce ozone. The device is entirely safe to use.

How long is the warranty on the Medify MA-15?

Medify offers a lifetime warranty on this device. However, the warranty is subject to regular filter replacement.

How often should the filters be changed?

The manufacturer recommends that you change the filters on average between 3-4 months.

In which rooms is it best to use this device?

This is a small but strong device, so you can use it in any room up to 138 sq. ft. (12.8 m²), even in somewhat larger rooms. My recommendation is not to use it in rooms where there is a lot of smoking because the carbon filter is not that powerful.

2 responses to “Medify MA-15 Review: Improved Efficiency with Double Filter”

  1. J Sakata

    Thank you for your very helpful and informative review of medify ma 15 air purifier. I have this model but can’t find the Filter Replacement Indicator. Will you please tell me where it is located? I’ve had this for over 5 months but the warning red light never appears and I can’t find it anywhere on this model.

    • Milan Antonic

      Hi, thanks for your kind words.

      When it is time to replace the filter, the filter reset indicator will show up behind the dimmer button. It looks like two little filters and glows in red when active. Filters on Medify MA-15 last approx 2500 hours, so maybe it’s not time to change them yet.

Leave a Reply

Your email address will not be published. Required fields are marked *