Medify Air - MA-112

Seconding this. I have the MA-112 as well for the main part of my house and a few MA-25s for the bedrooms. They work amazingly. Drastically improved my SO's allergy issues. Filters are a bit pricy but holy hell do they work well.

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 😀).

My MA-112 has the prefilter on the filter cabinet on each side. Pretty easy to clean it without affecting the filter itself. Did that design change?

Yep, I just take that #2 pre-filter and clean it every now and then.

If you're actually looking for any functionality, Dyson is off the table. When it comes to Dyson's air purifiers, design dictates function, so the engineers had to consider the aesthetics of the device over the functionality. The Philips 8000 is essentially the same thing as the Dyson, Philips doesn't have magic engineers, they're using the same "bladeless fan" design. The "bladeless" look they're going for essentially uses a cylindrical centrifugal fan to force air through small channels and out from the thin gaps around the upper frame, this is completely an aesthetic design and does absolutely nothing functionally except increase noise levels and suffocate air volume output. Hence why at anything above 5/10 fan speed, this fan sounds like a jet engine. If you want a functional air purifier, look at the Winix 5510 ($165) for an affordable option, Shark HP302 ($330) for a midrange option, Medify MA-112 ($700) for a high end option. If you want functional VOC filtration, the consumer grade stuff won't cut it. You have very few options like the IQ Air Health Pro Plus XE ($1,200) or AustinAir Healthmate Plus ($855) and the other options are industrial grade filtration systems like the ones I have for my workshop. However, this is unnecessary unless you live in a city with absolutely terrible air quality. I only have gas filtration because I have machines that emit toxic fumes and UFPs.

The Shark HP302 is the largest Neverchange model. By the way, the neverchange claim is a marketing gimmick, they just have high quality pre-filters that are easily cleanable which extends the life of the HEPA filter, which to their credit is probably a HEPA13 filter and will likely outlast most other models but should be replaced after 2-3 years.  The Medify has substantially higher airflow than any of the other consumer grade options, it will be able to filter much greater volume in less time. It is pricey but you were willing to pay for Dyson and it’s around the same ballpark. You can probably order direct from their website.  The Coway air purifiers are a good midrange option. Blue air is more of a low end option.  The Winix 5510 is just the newer version of the 5300. The biggest difference is that the 5300 uses a fibrous carbon filter while the 5510 uses a higher quality pellet charcoal filter. As I’ve already said previously, none of these consumer-grade activated charcoal/carbon filters are actually effective for more than a week or so. Won’t make much of a difference functionally between the 5510 and 5300, you’re only really looking at the HEPA filtration. If you want real gas filtration, you gotta pay up for the IQ Air or AustinAir. 

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.

Weird. A year or so ago, the MA-112 PRO was listed along the other consumer-grade units. It then disappeared, reappeared under Medify Air's commercial-oriented units only, and is now for sale alongside consumer-grade units again. Anyways, the [MA-112 PRO](https://medifyair.com/collections/air-purifiers/products/ma-112-pro-air-purifier-white?variant=42313765486659) is really powerful in terms of cleaning. So is the [MA-125](https://medifyair.com/collections/air-purifiers/products/ma-125-air-purifier?variant=39635063111747). There are two main drawbacks. Both models have integrated pre-filters overlaid on the HEPA filter media. This makes them harder to clean without potentially damaging the HEPA media underneath. Secondly, Medify Air has a reputation for be quite to very loud on the highest setting. The MA-112 PRO's sound level specs must be a misprint. There's no way "Sleep Mode" is the loudest setting at 56.5 dBA. The highest setting is probably in the high 60s dBA. If you're okay with a loud purifier, I might check out the [MA-112](https://medifyair.com/products/ma-112?variant=31240021180483) instead. It has separate permanent pre-filters for easier cleaning. However, it looks like the sound levels are incorrect here too. When I contacted Medify Air's support last year, I was told the highest setting for the [MA-112](https://medifyair.com/products/ma-112?variant=31240021180483) was actually 69-70 dBA.

An 800 sq. ft. room needs minimum CADRs of 534 CFM. If the room is 600 sq. ft., min. CADRs should be 400 CFM. The Coway Airmega ProX would absolutely be needed for the 800 sq. ft. space. Something like the [Medify Air MA-112](https://medifyair.com/products/ma-112?variant=31240021180483) is cheaper, but it's loud on the highest airflow speed (sound power level of 68 dBA). If you want just good or average quality, you could look into *two* [Winix C909 purifiers from Costco](https://www.costco.com/p/-/winix-c909-4-stage-air-purifier-with-wi-fi-plasmawave-technology/100842491).\* Top Smoke CADR is 323 CFM. It's somewhat loud on the highest airflow setting called "Turbo" (60 dBA according to the Decibel X Android app). Some Winix units develop bad motor bearings after the 2 year mark; this manifests as a whining, whirring, or clicking noise. The C909 has PlasmaWave, a bipolar ionizer. If birds will be in the house at any point, be sure to keep PlasmaWave *off* as it could harm them. (PlasmaWave is enabled by default after a power off/power on cycle.) \*Currently out of stock; should be back somewhat soon.

I have multiple Medify purifiers (MA-112 and MA-40). I have run them 24/7 365 for about 4 years now. Other than one light going out on the 112 (button still works just no light) they have been flawless, and quality of air is fantastic. Even had an air test done for particles when my kids were going through stuff a few years ago and there was an actual difference.

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

Hey man. I currently own (1) MA-112 in my master bedroom, (2) MA-40’s in the guest bedrooms, and was waiting on the MA-125’s to go on sale again as I want two for the living room. I am a Steamfitter that has done some HVAC and became interested in IAQ. After unfortunately coming across and dealing with some mold in A-coils / ductwork in the places I was staying at, I wanted to find a solution. While I was staying at an AirBNB long term, I AGAIN had respiratory issues and narrowed it down to what I believe was contamination somewhere in the supply ductwork. I’ve yet to order a particle counter to quantify things moving forward… But nonetheless, while in that AirBNB master bedroom, I ordered and setup a MA-112. I calculated the rough cubic footage of the space and used setting 2 and 3 on the MA-112 for ~6-10 Air changes per hour. I blocked the supply vent and kept the purifier on. —> Me and my partner after a week noticed major reductions in our symptoms. They definitely work for lowering particle counts. Now. The only drawback that I know of with these units, other than cost, is the carbon filter is in FRONT of the HEPA. I wish it wasn’t. Something to be mindful of. I sized my units so I wasn’t running them on their max settings. This is more expensive, but the result is a MUCH quieter space. I have the cost broken down on CFM/CADR depending on setting vs what I paid for the unit to get a flow per $1. I find the MA-125, MA-40, and MA-112 to do decent. I can DM you some of that info if you want. I’ve contacted Medify about their website and literature. They are inconsistent on the information posted on their website vs what is found in their manuals sometimes. If I’m in doubt about noise levels va flow rate, I go with the higher dB rating so as not to be disappointed. The MA-112 is VERY quiet on level 2 and not a bother on level 3 (it appears the MA-112 Pro flows more at the same noise levels vs the MA-112. The cost vs CFM is also better with the MA-112 Pro vs the MA-112 on these settings) Level 4 it is quite loud, and is moving a LOT of air. I do not use level 4 on my MA-112. I have been very satisfied with my MA-112. If you want, I’d be willing to work with you on the math to size a unit appropriately for your space and you’d be able to compare the requirements vs noise levels you think would be acceptable to you. I myself won’t tolerate a loud unit. It’s annoying when hosting or when w/ a SO/partner or when watching a movie. I can say the MA-112 in my Master Bedroom pretty much runs 24 hours on level 2 and I never really think about the unit. Lol. Just watched Pacific Rim again last night and it was business as usual. Never really notice the unit.

I use a MedifyAir MA 112. I Run It on fan speed 2 and get about 6 months at a time out of the filters. I have a family of 4, 1 cat, and 1 dog and have seen a huge reduction in dust.

I have two dogs in a townhome and have 3 air purifiers. Absolutely love them. No dog smell. I have one Medify and two Levoit. Just make sure you get one that can actually clean the size of the space it will be in. The downside is buying the filters, but I find it worth the cost, and you can find cheaper, off-brand filters on Amazon.