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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Best Sellers
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Replacement Filters
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Videos
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Videos for this product
2:07
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Does It Work or Not? I TESTED During Wildfire Season
⭐S.L. Reviews⭐
Videos for this product
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Watch BEFORE Purchasing MA40 Air Purifier
Erica Yaeger
Product Description
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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22,932
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1,799
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16,848
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16,848
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16,848
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22,932
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16,848
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Price
| $199.99 | $39.99 | $59.99 | $99.99 | $242.99 | $549.99 | $460.99 |
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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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CADR**
| 380 m3/h | 380 m3/h | 144 m3/h | 230 m3/h | 500 m3/h | 950 m3/h | 930 m3/h |
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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 Efficiency
| 99.9% down to 0.1 microns | 99.9% down to 0.1 microns | 99.9% down to 0.1 microns | 99.9% down to 0.1 microns | 99.9% down to 0.1 microns | 99.9% down to 0.1 microns | 99.99% down to 0.1 microns |
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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 | Quiet 99.9% Removal to 0.1 Microns | White, 1-Pack |  |  |  |  |  | |
| Price | $199.99 | $242.99 | $387.97 | $329.99 | -31% $69.96 List: $100.99 | -38% $79.99 List: $129.99 |
| Delivery | Get it as soon as Tuesday, May 14 | Get it as soon as Tuesday, May 14 | Get it as soon as Tuesday, May 14 | Get it as soon as Tuesday, May 14 | Get it as soon as Tuesday, May 14 | Get it as soon as Tuesday, May 14 |
| Customer Ratings | ||||||
| Value for money | ||||||
| Noise level | ||||||
| Easy to use | ||||||
| Sleep mode | ||||||
| Timer function | ||||||
| Sold By | Medify Air | Medify Air | Productech | Amazon.com | Tallber | CHIVALZ Store |
| filter type | Air Purifier | HEPA | HEPA | HEPA | 3 in 1 Filter | HEPA |
| floor area | 546.5 square feet | 2640 square feet | 2100 square feet | 1400 square feet | 1076 square feet | 376 square feet |
| control method | touch | touch | remote | touch | touch | touch |
| power source | Corded Electric | Corded Electric | AC | ac | ac | AC |
| noise level | 66 decibels | 56 decibels | 36 decibels | — | 22 decibels | 24 decibels |
| specification met | Energy Star Certified | Energy Star Certified | — | — | CARB Certified | FCC Certified, CARB Certified, EPA Certified |
Reviews with images
Great for the price
I have been using this product for over a month now. It’s easily adjustable, easy to use, and its size doesn’t stand out in our living area. I usually keep it on level 1/3. I haven’t noticed a huge difference in air quality but I’m sure that has to do with me only using the lowest level at all times.I bought the two pack and use the other one in the room that holds our cat’s litter box. I have noticed a difference in the amount of dust that lingers around so all in all I count that as a win.The noise is not bad and almost unnoticeable on level one. Obviously the higher the level the more noise but I’m a huge fan of white noise anyways. It’s not too bright but I also don’t have it in a place where I want total darkness.Overall, I’m glad I purchased these and would recommend them.
Top reviews from the United States
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Top reviews from other countries
Robb Bell
It works! Not just works But actually works great bought another best unit's ever
Reviewed in Canada on May 24, 2022Color: WhiteSize: MA-14-1-PackVerified Purchase
Doug
Nice Clean Air and my Bulldog and I are breathing much better after only a few hours of use
Reviewed in Canada on January 10, 2022Color: WhiteSize: MA-40-2-PackVerified Purchase
Leopoldo Perez Casillas
Purificador muy eficiente
Reviewed in Mexico on September 2, 2021Color: BlackSize: MA-40-1-PackVerified Purchase
Zagala
Great Product
Reviewed in Canada on June 11, 2022Color: WhiteSize: MA-40-2-PackVerified Purchase
Client d’Amazon privé
Efficacité pour assainir l'air
Reviewed in Canada on July 20, 2023Color: WhiteSize: MA-40-2-PackVerified Purchase
