Medify Air - MA-112

**Look at the Medify MA-112** 1. Austin Air HealthMate over the newer IQAir ***GC series***, because the Austin has lengthier and affordable filter replacement timeframes and cost. And the Austin also adds zeolite to aid in gas/odor filtration. See this comparison video between the two: [https://youtu.be/oKlkgxHbA\_o?f](https://youtu.be/oKlkgxHbA_o?f) Contrarian comparison (and decent channel): [https://youtu.be/YbsvedBljlY?feature=shared](https://youtu.be/YbsvedBljlY?feature=shared) There's the newer Austin Air HealthMate Plus, but I don't know how much activated carbon this newer version contains. Customer service for IQAir in the U.S. seems non-existent. Note that the air flow, referred to as clean air delivery rate (CADR) isn't great for either the Austins or IQAirs--they range from 250 to 300. Great filtration, but air flow is key. 2. Also look at the new IQAir - Atem X, which is AHAM-certified at 415 --much higher than the other IQAirs and the HealthMate. [https://www.ahamdir.com/room-air-cleaners/](https://www.ahamdir.com/room-air-cleaners/) 3. I highly recommend looking at the Medify MA-112, which has one of the highest (if not the highest) CADRs (\~600) on the market--twice that of the Austins and the IQAirs--and is known to be quiet for its size. It's also on the AHAM certification list.

What’s the sq ft of the room? What speed do you run the living room ma112? And are you aiming for a minimum or desired ACH?

for 5ach (the min recommended for allergies) you would need ~approx 1100 CADR/cfm for the whole house (but more CADR is better) . If you run your ma112 at speed 2 that’s only 289 cfm. That’s not doing much. I’m guessing you use that speed due to noise? Smart Air blast is 1200+ CFM at only 43db (ma112 is 56 db), would be a good choice imo. Individual purifiers in the bedrooms along with the other living spaces would be best though. Suggestion: Narrow down your choices to purifiers that provide CADR that’s 2/3 the room sq ft at the lowest noise level (at your budget with low operating costs 😀).

Agree here. I have the Coway ProX and the Medify MA-112. They both move lots of air. The ProX is more quiet and built better, but is also a bit larger.

Hi! just tagged you in another post that did get some replies. We purchased a large stand alone air purifier for our main living area (medify air 112) so running that for now- but I do really want to install a system on our actual hvac unit- I still just don’t understand which is the best way to go but on the other post it seemed to say that the air scrubbers are gimmicky…. If you find anything else out would love if you could share.

Thanks. We have Coway air purifiers for our bedrooms and keep the doors closed. Just bought a Medify Air 112 for the first floor that says it can clean 2000 square ft. every 30 mins- problem is we have an open floor plan so no way to close doors

I don't think the absolute best purifiers for a large room are on this list. In order to calculate minimum Clean Air Delivery Rates (CADRs), we would need your room's length x width x height. [CADRs should be at least 2/3 of your room's area (assuming an 8 ft. high ceiling)](https://ahamverifide.org/ahams-air-filtration-standards/). For wildfire smoke treatment, Smoke CADR should *equal* your room's area which again assumes an 8 ft. ceiling. The best for large rooms in my opinion would be the [Coway Airmega ProX](https://cowaymega.com/products/airmega-prox) and the [Smart Air Blast MKII](https://www.smarterhepa.com/products/smart-air-blast) as both are quiet and powerful. From the list OP has shared, the best is clearly the [Medify Air MA-112](https://medifyair.com/products/ma-112?variant=31240021180483). However, it is very loud at 70 dBA. Keep in mind that CADRs are usually listed for the top speed setting only. The top seed is the loudest. Lower speeds have lower CADRs.

The Medify Air MA-112 has fantastic cleaning performance. Unfortunately it is loud on the top setting. I'm aware of this because I asked Medify Air's customer support about a typo/error in the product manual. I was told: * Minimal Noise Level: 45.6 dBA * Maximum Noise Level: 66.8 dB / 70 dBA This is a common problem for air purifiers and not limited to Medify Air.

I would definitely switch to H13. Medify Air's H14 filters are more restrictive, so it's going to lower Pollen CADR. Pollen is quite large compared to other particulates (like PM0.1 and PM2.5) anyways. The CADRs you see for the [Medify Air MA-112](https://medifyair.com/collections/air-purifiers/products/ma-112?variant=31240021180483) are for the True HEPA H13 filters. On the same product page, they also list "CADR By Speed". But each speed is an averaged CADR for the different particulate types. Another issue: I believe the maximum value for Pollen CADR under the AHAM AC-1-2020 standard for any purifier is 450 CFM. If you check the [AHAM Verifide Directory](https://www.ahamdir.com/room-air-cleaners/), the Pollen CADR value for the **Medify Air MA-112** is actually >450 CFM.

Golden Rule for Clean Air Delivery Rates: for any given room, CADRs should be at least 2/3 of a room or space's area. If you have a baby or someone who is particularly sensitive to pollutants, oversizing is generally recommended. Unfortunately all of the models you mentioned have very little carbon. This is true for most common or semi-common air purifier brands, as they focus on particulates (e.g., pollen, dust to an extent, PM2.5, dander, smoke particles, etc.) removal. If you have persistently high gas/vapor pollution levels, you need a heavier-weight sorbent media air purifier. By sorbent media, this means activated carbon, activated alumina, or synthetic zeolites. Sorbent media air purifiers are expensive ($800+), loud, and have lower post-motor air flow & lower CADRs. This is due to the need for ["dwell time" or "residence time"](https://www.emcelfilters.co.uk/carbon-filters-frequently-asked-questions/) in the sorbent media bed. You would also need to control relative humidity, keeping in below 60% so airborne water molecules are not adsorbed and will not shorten the filter's life. Most makers (**Airpura, Austin Air, AllerAir**) of these purifiers do not recommend running the purifier on the high setting for optimizing dwell time, but operation will still be noticeable. I don't know what chemicals are present in your environment, but I would choose a unit whose sorbent media blend targets VOCs. Certain VOCs such as aldehydes (e.g., formaldehyde) need modified media to enhance removal capacities. # Sound/Noise Issues The second problem (touched upon above for sorbent media purifiers) is sound or noise levels in the particulates-focused units. The Medify Air MA-112 has great CADRs, but it will be very loud on high. I spoke with Medify Air as the listed specifications were wrong in their product manual—they claim the **MA-112 is actually 70 dBA on high** which may be overwhelming. For a newborn baby, you need very quiet operation in the nursery since it's a smaller space. To achieve this, you can either buy multiple air purifiers per room and run them at lower speed settings or you can buy a fairly quiet & oversized unit. Noise or sound level disparity—that is, the difference between real world sound levels and what's listed in the specs—is a problem for many purifiers. This subreddit has received good feedback on the **Smart Air Blast MKII** being very quiet. The **Coway Airmega ProX** is an excellent unit, but I don't know if real life sound levels match what's in the specs. I've left out Winix as they tend to be quite loud on high and they're not considered as high quality as Coway. # Particulates Units for quiet operation and/or 700 - 1,000 sq. ft. spaces: **Coway Airmega ProX** * Room Size: 4.8 ACH at 886 sq. ft. * Other ACH: 21 ACH at 200 sq. ft.; 6.7 ACH at 700 sq. ft.; 4.2 ACH at 1,000 sq. ft. * Particulates Filtration: HEPA H13 * Sound Levels: 23 - 46 db(A) * Dust CADR: 580 CFM * Pollen CADR: 450 CFM * Smoke CADR: 568 CFM * Features: Locking wheels, Smart Modes, "Max2" Filter Replacement Indicator, Pre-Filter Maintenance Indicator, PM & Air Quality Unit Indicator, Air Quality Indicator * Price: Currently $796.00 in White; $619 in Mocha Beige at [Coway](https://cowaymega.com/products/airmega-prox?variant=45657065718014) **Smart Air Blast MKII Air Purifier** * Air Changes per Hour (ACH): 4.8 ACH at 1,875 sq. ft. * Other ACH: 45 ACH at 200 sq. ft.; 12 ACH at 700 sq. ft.; 9 ACH at 1,000 sq. ft. * Particulates Filtration: H13 HEPA Filter (150 sq. ft. of filter surface area) * Composite CADR: 559 CFM * Separate particulate CADRs not measured * Sound Levels: 29 – 37 – 43 dB * Features: Locking casters and metal housing in white color * Price: $929 at [Smarter HEPA](https://www.smarterhepa.com/products/smart-air-blast) # Smaller Particulates Units (you could use multiple purifiers per space or room if top speed is too loud) **Coway Airmega 230** * Air Changes per Hour: 4.8 ACH at 403 sq. ft. * Particulates Filtration: HEPA H13 * Dust CADR: 294 CFM * Pollen CADR: 302 CFM * Smoke CADR: 273 CFM * Sound Levels: 21 - 51 dB(A) * Price: Currently $209 in Dove White at [Coway](https://cowaymega.com/products/airmega-230?variant=43519093145854) **Coway Airmega 240** * Air Changes per Hour: 4.8 ACH at 403 sq. ft. * Particulates Filtration: HEPA H13 * Dust CADR: 292 CFM * Pollen CADR: 343 CFM * Smoke CADR: 282 CFM * Sound Levels: 21 - 51 dB(A) * Price: Currently $243.00 in Dove White at [Coway](https://cowaymega.com/products/airmega-240?variant=42429066215678) **Coway Airmega 400** * Air Changes per Hour: 4.8 ACH at 650 sq. ft. * Particulates Filtration: HEPA H13 * Dust CADR: 358 CFM * Pollen CADR: 450 CFM * Smoke CADR: 285 CFM * Sound Levels: 22 - 52 dB(A) * Price: Currently $349 in White (with black legs and grill top) at [Coway](https://cowaymega.com/products/airmega-400?variant=33436457009287)

I’d yank the Levoit units off this list unless cost is your biggest driver. While the Everest air is a good unit, the core is just not. It will clean air at first but it is cheap and the filter cost will add up over time. The lack of real pre-filters really kills these things. From your list, Medify is excellent. As is Coway 400. IQ Air will filter better than any of these units… but moves a lot less air doing so. I own one and I love it but I fully admit it lacks airflow and is VERY expensive. Alen is also good, you can optionally equip them with extra carbon which is nice. You won’t regret any of these purchases tbh.

CleanAirKits is the quietest. Dyson second quietest. My Medify MA-112 is pretty quiet too.

I have one MA-112 for my living room/diningroom/kitchen and one MA-112 just for my bedroom, because we have a lot of animals, are slightly allergic, and need a safe haven. It works great.

Check out medify air , they come in all sizes and they are true H13 HEPA filters. Great customer service, I have quite a few of them in my house and love them

So I had medify in my house. I liked that it filtered down to . 01 micron. And rather than get a big unit I have a bunch of small ones so I can have them spread throughout the house. What they lack that I would prefer is a feature that's smart purifiers have that tell you when to replace the filter. So common practices to replace them every 6 months, But that's a generality. If you have wildfire smoke then you want to replace them more often. But you shouldn't replace the more often than you have to because they're expensive. Smart purifiers will give you that data in the app. I think some of the better purifiers tend to be so expensive that you couldn't get many of them and they're also becoming really huge, like Jaspr. One that I particularly enjoy right now is airthings, and coway is also good. Air things also has a bunch of sensors that you can put around your house for air quality and I like that I can use those to trigger my purifiers to kick into higher gear. I wish there was a simple answer to it, but there really isn't. There's some actually pretty complicated math about the size of your rooms. Okay so this is all about how often you exchange the air in a room. On average you want it to exchange 4 to 8 times but in a hospital setting it would exchange 10 to 15 times. How fast they are moves is referred to as the clean Air delivery rate (CADR). This is basically how many cubic feet of air are moved per minute. Here's where the math comes in. So you're going to take the CADR, And multiply it by 60, because they're 60 Minutes in an hour. Now you have how many cubic feet of air are moved per hour. Hold on to that number. Now let's take the volume of your room cuz remember all of these purifiers talk about square feet but that's a meaningless number. You need cubic feet so that's the length times. The width times the height in feet. Hold on to that number. Now you're going to take the cubic feet per hour and divide it by the cubic volume of the room. Those two numbers you held on to... Divide one by the other. That results is your air exchange per hour. That's how many times per hour the air is going to be exchanged in your room. And remember that's often on the highest setting. So if you keep your air purifier at a lower less noisy setting, it's not going to exchange as often. When I talked to experts purifiers that had three stages of filtration, so they've got your HEPA. They have a pre-filter of some kind that's going to take out your big dust, and then they also have a charcoal filter that's going to deal with your vocs, as long as you have all three then you're really just trying to Target that high ACH, Air change per hour. I know that's complicated. Let me know if you have questions or if I didn't explain it well.

I bought 5 Vital (100 + 200) devices and 1 Core. The vitals barely reduced PM when I used them. I switched to Coway and Medify and had much better results.

I own medify air. I cannot complain about performance. However, people online complain that you must change your filters every 6 months or your lifetime warranty will be voided.

My partner and I use Medify air purifiers, I'm generally a fan but haven't tried others so my frame of reference might not be the best

I have a whirlpool air purifier that is at least 12 years old that’s still going. I also like medify air.

I’m in the same boat. Wondering what decision you made? I had a medify one and returned it because the AQI inside my apartment was 150 after running the purifier 24/7 for an entire week. I then got a Wellis and I’m doubting its efficacy just cuz I’m like wtf is this technology and I see basically no reviews online. I’m leaning toward air doctor I think? How about you?

I have a medify one. It’s worlds different for pet dander.

I run a Medify purifier in my living room and it handles wildfire smoke pretty well for me. I like the filter setup, and it doesn’t get too loud.

we have had honeywell, air doctor, and medify air, as well as a random amazon one (veva). honeywell has actually been my favorite, and it’s also cheaper than the other 2 besides the veva. i am extremely sensitive to noise, and it is very quiet. the medify one sounds horrible- it has a weird high pitch and i can’t stand it even on the very lowest setting. i actually sent it back and they replaced it and the second one sounds the same. the air doctor is quiet too, but honestly i just don’t see a big difference in effectiveness for how much more expensive it is.  i looked for something without ozone or anti-microbial treatments, which all of the coway ones have one or the other of (the cheaper ones have ionizers which create ozone, the more expensive ones have anti-microbial filters only). all you really need is HEPA and a carbon filter. and go oversized- get one that is for an area larger than what you have. they calculate effectiveness based on it being on the highest setting, which may be louder than you want. 

I like Medify air and Dyson

I second Medify. They’re all great products.

Assuming that these aren't erroneous readings: - open a window or patio door a crack and turn on a fan on the opposite side of the apartment to suck in some fresh air. - get HEPA filters with activated charcoal - that will help with the VOC; we use some by Medify Air.