In this comparison, I’ll be taking a closer look at two air purifiers from Medify: the MA-15 and the MA-25. These are compact, innovative, and impressive little devices.
Both air purifiers share almost identical design principles. Each uses a dual filter positioned on the sides, and although they don’t offer many advanced features, they are definitely worth comparing.
The Medify MA-15 covers rooms up to 138 sq. ft. (12.8 m²), while the Medify MA-25 covers up to 171 sq. ft. (16 m²). In rooms of these sizes, both purifiers can clean the air 4.8 times per hour.
When it comes to build quality, both models are made of decent-quality plastic and are available in several color options. What I particularly like about the Medify MA-25 — and what really stands out — is its tempered-glass control panel.
Keep reading to find out what similarities these two models share, which one performs better, operates more quietly, and is easier to maintain.
Our Verdict
Since the Medify MA-15 and MA-25 are almost identical, with only a few design differences, this comparison could easily end in a draw.
However, I always try to pick a winner, even when the differences between two devices are barely noticeable.
In my opinion, the Medify MA-15 is the better choice. It’s slightly quieter, consumes less power, and, most importantly, directs air upward rather than forward, a design I personally prefer.
As I mentioned earlier, this could easily have been a tie, so if you choose the Medify MA-25, you won’t be making a mistake.
If you have any questions about these two models, feel free to leave a comment below.
Specs: Medify MA-15 Vs MA-25
| Product Image |  |  |
| Manufacturer | Medify | Medify |
| Model | MA-15 | MA-25 |
| Dimensions (inches / cm) | 7.5 x 7.5 x 12.2 inches (19.1 x 19.1 x 31 cm) | 13.5 x 8 x 8 inches (34.3 x 20.3 x 20.3 cm) |
| Weight (pounds / kg) | 5.89 lb (2.67 kg) | 7.3 lb (3.3 kg) |
| Clean Air Delivery Rate (CADR) | 78 CFM (132 m³/h) | 110 CFM (187 m³/h) |
| Coverage (4.8 ACH)
Room Coverage Explanation: ACH is a measurement used in indoor air quality management to indicate how many times the air within a defined space is changed/moved through the filter media.
For more details, visit our ACH calculator tool. | 138 sq. ft. (12.8 m²) | 171 sq. ft. (16 m²) |
| Performance Ratings Performance Ratings Score Summary: 8.3 - Average Score (99 products) 9.9 - Best Score (1 products) 1 - Worst Score (1 products) We use the Temtop LKC-1000S laser particle meter to test the particle removal efficiency of every air purifier. It measures PM2.5 (µg/m3), PM10 (µg/m3), Particles (per/L), and HCHO (mg/m3) in the air, and also calculates the AQI. You can read more about our testing methodology here. | ||
| Filtration Technology | Pre-filter, True HEPA Filter, and Activated Carbon Filter | Pre-filter, True HEPA Filter, and Activated Carbon Filter |
| Filter Replacement Indicator | Yes | Yes |
| Filter Life | 3-4 months | 3-4 months |
| Power Consumption
Power Usage Summary: Our extensive testing of 99 air purifiers revealed the following power consumption insights:
Check out our power consumption calculator tool. | 25W | 28W |
| Operating Costs Ratings Operating Costs Ratings Score Summary: 8.8 - Average Score (99 products) 10 - Best Score (2 products) 1.7 - Worst Score (1 products) We measure the power usage at all speeds using an energy meter, after which we calculate how much it would cost to use the device at a particular fan speed for one month. For reference, we use an energy price of $0.12 per kWh. You can read more about our testing methodology here. | ||
| Number of Fan Speeds | 3 – Speed 1, Speed 2, and Speed 3 | 3 – Speed 1, Speed 2, and Speed 3 |
| Air Quality Sensor Air Quality Sensor Summary: Out of 99 air purifiers tested, only 49 have the air quality sensor. | No | No |
| Air Quality Indicator | No | No |
| Auto Mode Auto Mode Summary: Out of 99 air purifiers tested, only 50 have auto mode functionality. | No | No |
| Smart App Smart App Summary: Out of 99 air purifiers tested, only 29 have smart app functionality. | No | No |
| Voice Control Voice Control Summary: Out of 99 air purifiers tested, only 28 have voice control functionality. | No | No |
| Other Features | TimerChild LockDimmer | TimerDisplay OffDisplay Lock |
| Noise Level (low – high) | 41.2 – 61.1 dBA | 41.8 – 64.0 dBA |
| Noise Ratings Noise Ratings Score Summary: 9.2 - Average Score (99 products) 10 - Best Score (1 products) 7.6 - Worst Score (1 products) We use a special noise measurement tool to test the noise level of the air purifier at all speeds. We measured the noise level on the dBA scale. You can read more about our testing methodology here. | ||
| Best Suited For | Small Spaces Bedrooms | Small Spaces Dust Portable Use |
| Warranty | Lifetime (conditioned) | Lifetime (with subscription) |
| In-Depth Review | Medify MA-15 | Medify MA-25 |
| Price |
Performance Test – Comparison
Frankly, I like it when I get to test two very similar air purifiers. That’s exactly the case this time — two devices from the same brand, offering the same functionalities and very similar CADR ratings.
The Medify MA-15 has a CADR of 78 CFM (132 m³/h), making it ideal for spaces up to 138 sq. ft. (12.8 m²). Meanwhile, the Medify MA-25 delivers a CADR of 110 CFM (187 m³/h) and is best suited for rooms up to 171 sq. ft. (16 m²).
We tested both units in rooms of different sizes and measured the air quality improvement over a 60-minute period using a Temtop laser particle meter.
Particle Removal Tests - Comparison
We placed the Medify MA-15 and Medify MA-25 in two separate tests and measured their performance using the Temtop laser particle meter.
In a 194 sq. ft. (18 m²) room, the Medify MA-15 improved air quality by about 92%, while the Medify MA-25 achieved 94% in the same test.
In a second test, performed in a much larger space than recommended, the MA-15 improved air quality by 90%, and the MA-25 by 91%.
Overall, the Medify MA-25 performed slightly better in our airborne particle removal tests, but the difference is minimal — and hardly noticeable in real-life use.
Smoke Box Test – Comparison
In our smoke removal test, both air purifiers delivered nearly identical results.
The Medify MA-15 cleared all the smoke from the glass box in 32 seconds, while the Medify MA-25 did so in 31 seconds.
This is yet another test where the Medify MA-25 came out ahead — though by a very small margin.
Noise Level Test – Comparison
Before discussing noise levels, I should mention that both the Medify MA-15 and MA-25 feature three fan speeds and no dedicated sleep mode — yet both are impressively quiet on their lowest setting.
The MA-15 produces just 41.2 dBA at the first fan speed, while the MA-25 measures 41.8 dBA. I must say, these air purifiers are noticeably quieter at low speeds than some competitors, even in their sleep modes.
Noise Levels - Comparison
Comparison of noise levels at all fan speeds between the Medify MA-15 and Medify MA-25 air purifiers.
However, both units get a bit loud at maximum speed, and I believe many users would find it difficult to stay in the same room for long when either is running at full power.
| Fan Speed | Medify MA-15 (dBA) | Medify MA-25 (dBA) |
|---|---|---|
| Speed 1 (Low) | 41.2 dBA | 41.8 dBA |
| Speed 2 (Medium) | 47.1 dBA | 50.3 dBA |
| Speed 3 (High) | 61.1 dBA | 64 dBA |
At the highest setting, the Medify MA-15 reaches 61.1 dBA, while the MA-25 hits 64 dBA.
When comparing noise levels at all speeds (see the table or chart above), it’s clear that the Medify MA-15 is the quieter air purifier overall.
Operating Costs – Comparison
There isn’t much difference in power consumption between these two devices. To start, the Medify MA-15 uses a 25W motor, while the Medify MA-25 is equipped with a slightly more powerful 28W motor.
If you were to run both devices at maximum speed, 24 hours a day for a full month, your electricity bill would increase by about $2.08 for the MA-15 and $2.31 for the MA-25.
Monthly Power Consumption Cost - Comparison
Comparison of monthly power consumption costs for the Medify MA-15 and Medify MA-25 air purifiers at all fan speeds.
Although neither of these Medify air purifiers consumes much electricity, I have to say I’m somewhat disappointed with their filter lifespan, and especially the high price of replacement filters.
| Fan Speed | Medify MA-15 (W + $/month) | Medify MA-25 (W + $/month) |
|---|---|---|
| Standby | 0.9W ($0.08) | 0.1W ($0.01) |
| Speed 1 (Low) | 2.2W ($0.19) | 1.6W ($0.14) |
| Speed 2 (Medium) | 5.3W ($0.46) | 7.3W ($0.64) |
| Speed 3 (High) | 23.7W ($2.08) | 26.3W ($2.31) |
Still, when you put everything into perspective, the Medify MA-15 turns out to be a slightly more maintenance-friendly option than the MA-25.
Features Overview
When we compare the features that these two air purifiers have, there is simply no difference that I could single out because both devices have exactly the same features.
I like that both air purifiers have a filter reset indicator, which will notify you when it’s time to replace the old filters. Dimmer is also a useful option that allows you to dim all the indicators on the device.
Display lock is another useful option that adorns both devices and allows you to lock all the buttons on the device from accidental switching of preset commands. There’s also a timer option, which basically determines after how long you want the device to turn itself off. On both devices, the timer can be set to 1h, 2h, 4h, and 8h.
I have nothing more to say about the options because, as I mentioned earlier, the Medify MA-15 and MA-25 have identical options.
Airflow
Although their construction is almost identical, and both have dual filters located on the sides, their airflow is slightly different.
They draw air in through the openings on the sides, which is then filtered and exits through the grilles on top in the case of the Medify MA-15, and through the openings on the front in the case of the Medify MA-25.
Warranty
I have to commend the Medify company and especially emphasize the possibility of activating the lifetime warranty for these two devices.
All you need to do to activate the warranty is to subscribe to replacement filters directly on the Medify website.
Filtration Technology
Medify MA-15 and Medify MA-25 feature a dual filter, which is placed on the sides. Both devices use three-stage filtration technology consisting of a pre-filter, True HEPA filter, and activated carbon filter.
The only noticeable difference here is in the size of the filters. Medify MA-25 has slightly larger filters than MA-15.
As for the efficiency and reliability of the filter, I must say that I am very satisfied with both, which you will confirm in the performance tests that I will present later.
I would also like to praise that both devices use the True HEPA filter, which is the primary and definitely the most deserving stage of filtration on these two devices.
How to Replace Filters?
Neither of the two mentioned Medify air purifiers has a washable filter. This means that the filters are consumable and need to be changed periodically.
Unfortunately, the filters on Medify MA-15 and MA-25 last for only about 3-4 months. However, the good thing is that you don’t have to monitor when the filters need to be changed, as both devices use a filter reset indicator to let you know when to change the filters.
I have described the detailed process of replacing the filters for both devices in the individual reviews that you can find at the links below.
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