I ordered two of these last spring. The first one was perfect and is serving me well in the room with 4 litter boxes. Whenever I scoop the boxes the machine, really does detect the activity and the extra dust in the air and amps up to a faster speed to clear the dust.
Even though it’s in this one room, it has really helped the ground floor of my 2 story home become less dusty. And in most modes it is quiet enough that my cats actually like it and like to lie down in front of it. Strange, but I’m glad they like it. The feature sets are listed so I won’t go into those but everything works well. I don’t use any night mode, though, so I can’t speak to that. I just run it on auto and once in awhile use the ionizing cleaning.
Much to my relief, there have been no weird burning plastic odors as reported with some other brands in the 8 or 9 months I’ve been running it.
I did get a separate warranty registration in the mail because apparently one was omitted in the shipment sent to me. I found that interesting. I do wish I had registered within the prescribed period of time, but I’d put it aside while I dealt with other things and just let it go.
The downside is that the replacement filter looks really expensive at $69. It’s an excellent quality though, and likely lasts longer than cheaper ones.
Okay now here is where it gets weird for me. I decided I liked this filter so much that I would order one for our master bedroom, which is pretty large. And the unit arrived. But to my distress, it was put together weird. Seams were crooked and there was a lot of rattling noises inside. It didn’t look like it had been damaged in transit. It just apparently went through a very bad day on the assembly line. I turned it on and it ran. But the rattling noise was disconcerting.
Basically it was horribly defective and not usable. And I was going to contact the sellers but then I noticed something odd in that apparently my order was still on its way. I was so confused. My name and address was on the box I had just received but the tracking number was different.
And then my mother-in-law fell ill and we had to drop everything to take care of her. Meanwhile, as I’m on the way to take care of her, ANOTHER unit arrived to my house. I checked my Amazon account and only one second order is on record. And this third unit was the one. I have no idea why I was randomly sent a completely busted up unit. But I dragged this third one in and it sat in my foyer for a couple of weeks while I dealt with my family crisis.
I would have assumed perhaps the sellers realized they made a mistake sending out a damaged unit and sent a good one, except there is no record with Amazon for that busted up one.
Finally, I got a free moment from hospital vigils, so I pulled this third one out and externally it looked okay but internally it had something loose and rattled badly, too. So I set it aside intending to try and get all of this straightened out with the seller.
But my mother-in-law got pneumonia and passed away. In dealing with the hospital vigils and her funeral, we didn’t have the time or the energy to deal with this. So all these months I’ve had two broken units in my bedroom. I just said the heck with it and ordered a Dyson for the bedroom during a massive sale.
Meanwhile my original is serving us very well in the cat litter box room.
I’m way past the time to register for warranties or get warranty service on the defunct units. I will just keep the broken extras for parts for the good one.
So, basically it’s 5 stars for the absolutely fantastic working unit. But with a caution to do a quality control check when your air cleaner arrived and register your machines for warranties.
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From the brand
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Specializing in Air Purification
Inspired by parents who wanted to provide relief to their daughters suffering from asthma, Medify Air purifiers were engineered from the start with top-quality True HEPA H13 filters.
Flash forward, and Medify has now helped countless schools, medical offices, and individuals create safe environments with ultraclean air. We offer solutions that are long-lasting, powerful, yet simple to use.
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Replacement Filters
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Product Description
Certified by Energy Star, ETL, CARB, and AHAM, 2023.
*Based on average CADR for pollen, smoke, and dust when operating at highest fan speed. Assumes closed room with 8-foot ceiling. Tested by Intertek Lab for HEPA filter material.
Premium Air Quality Products
 MA-40 Air Purifier |  MA-40 Replacement Filter |  MA-15 Air Purifier |  MA-25 Air Purifier |  MA-50 V3.0 Air Purifier |  MA-112 Air Purifier |  MA-125 Air Purifier | |
|---|---|---|---|---|---|---|---|
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Customer Reviews
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12,724
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2,512
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4,792
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13,329
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1,215
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1,575
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77
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Price
| $244.99 | $49.99 | — | $139.99 | $284.99 | $594.99 | $399.99 |
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Coverage Area*
| 1,793 sq ft every 60 minutes | 1,793 sq ft every 60 minutes | 585 sq ft every 60 minutes | 825 sq ft every 60 minutes | 2,640 sq ft every 60 minutes | 4,455 sq ft every 60 minutes | 4,102 sq ft every 60 minutes |
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Filter Type
| True HEPA H13, H14 available | True HEPA H13, H14 available | True HEPA H13 | True HEPA H13 | True HEPA H13, H14 available | True HEPA H13, H14 available | True HEPA H14 |
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Filter Lifespan
| 4-5 months | 4-5 months | 4-5 months | 3-4 months | 3-4 months | 4-5 months | 4-5 months |
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Min - Max Noise Level
| 40.5 - 53.3 dB | — | 26.1 - 45 dB | 19.8 - 49.3 dB | 29.1 - 58.7 dB | 35.8 - 56.5 dB | 22.4 - 51.7 dB |
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Option with UV Light
| ✔ | ✘ | ✔ | ✘ | ✘ | ✔ | ✔ |
Compare with similar items
This Item  Medify Air Medify MA-40 Air Purifier with True HEPA H13 Filter | 1,793 ft² Coverage in 1hr for Smoke, Wildfires, Odors, Pollen, Pets | Removal to 0.1 Microns | Black, 1-Pack | Recommendations  |  |  |  |  | |
| Price | Currently unavailable. | -22% $379.00 List: $482.99 | $284.99 | $380.00 | $84.99 | $655.99 |
| Delivery | — | — | Get it as soon as Wednesday, Apr 23 | Get it as soon as Wednesday, Apr 23 | Get it as soon as Wednesday, Apr 23 | Get it as soon as Wednesday, Apr 23 |
| Customer Ratings | ||||||
| Sold By | — | The Lulu Belle Shop | Medify Air | Medify Air | Medify Air | Medify Air |
| filter type | HEPA, Activated Carbon | HEPA | HEPA | HEPA | HEPA | HEPA |
| floor area | 1793 square feet | 4102 square feet | — | 1793 square feet | 660 square feet | — |
| control method | touch | touch | touch | touch | touch | touch |
| power source | Plug in | Corded Electric | Plug in | Plug in | Plug In | Plug In |
| noise level | 46 decibels | 67 decibels | 56 decibels | 46 decibels | 51 decibels | 70 decibels |
| specification met | Energy Star Certified | Energy Star Certified | CARB Certified | Energy Star Certified | Energy Star Certified | Energy Star Certified |
If it's in your price range, it works, very well.
I have a 3 year old and a 1 and a half year old sharing a room. They both developed a bit of runny nose and some conditions that appeared like allergies. My son was taking Albuterol to help with his breathing and wheezing in his chest for a while ( some of my reviews show the inhalers and nebulizers I've bought or returned to deal with his breathing issues ). We've also been running a cool humidifier next to my son's crib to help with his nasal issues as recommended by various doctors. This last time of ending up at the ER with my son leaking from his nose and having heavy breathing was kind of it for me so I decided to try and improve the air quality of their room. We run standard air filters in our home and have very little build up on our fans/air conditioning outlets so I don't believe it's a heavy particulate issue, but I said what the hell let me order it. We received this filter about a week ago and to be honest this was an aesthetic purchase from the pictures. I also really liked the idea of a child proof lock function. The filter is all one unit and fits very nice and snug along the edges. The unit itself look very nice, it's sleek, with a pretty easy function pad up top. The LED started off with a blue light which means clean air, but once in a while kicks over to green. During this week both of my kids have been breathing much better, no more runny noses, and per my wife it seems to have worked over about a 48 hour period. I set it to auto and once in a while you hear the fans kick up a little quicker then back to normal. At night, the night mode is a very low hum, almost not noticeable unless you know it's there. An added benefit, is that between these two toddlers, at any time in the night or early in the morning after a night of them sleeping and 'releaving pressure' from their pre bedtime bottles, it would be like walking into a wall of farts. We have not had to deal with that since putting this air purifier in, so it's been worth every penny haha. I'll be buying another some time for the living room.
Top reviews from the United States
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- Reviewed in the United States on December 29, 2019Item Package Quantity: 1Color: WhiteVerified Purchase
- Reviewed in the United States on December 4, 2019Item Package Quantity: 1Color: WhiteVerified Purchase
Top reviews from other countries
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Leopoldo Perez CasillasReviewed in Mexico on September 2, 2021
Purificador muy eficiente
Item Package Quantity: 1Color: BlackVerified Purchase - H.2.OReviewed in the United Arab Emirates on March 24, 2023
Very high CFM - and excellent triple filter setup
Item Package Quantity: 1Color: BlackVerified Purchase - BriannaReviewed in Canada on February 16, 2025
Works For My Needs
Item Package Quantity: 2Color: BlackVerified Purchase - MaxtermReviewed in Canada on January 27, 2022
Buy this, don't look further.
Item Package Quantity: 1Color: BlackVerified Purchase - Katherine StephensonReviewed in Canada on January 29, 2025
Awesome product, works amazingly!
Item Package Quantity: 2Color: BlackVerified Purchase
