MA-40

Check out [Medify Air](https://medifyair.com/collections/air-purifiers), I have two and they're fantastic. They come in many sizes. I am not in any way affilited with them, I switched to their brand after the brand I previously loved stopped making replacement filters.

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 have a Medify M-40v2, it's a really good air purifier (performance wise) and the filters are great, but it produces a really annoying hum at 469hz at the lowest setting and 702hz at the highest setting, if it wasn't for that the purifier would have a really pleasant brown noise curve, but with that noise it's unbearable and I only leave it on when I'm out of the room or use NC headphones. So there's a chance the smaller one has the same issue. https://preview.redd.it/8fof2zxf7qrf1.jpeg?width=1220&format=pjpg&auto=webp&s=73ead72b47f83d6b7e52ce35a3de61bd9d16e4cd

So I’ve been through a medify air m40 and a Dyson tp10 I think it was just their basic hepa 13 model. I recently got a molecule mini + and I stopped sneezing randomly/constantly in my apt. I think it’s funny because they are such a “scam” and or least not like factually on paper a good product….its working for me and I can’t really complain

I use Medify MA-40

This. I have the MA-15 (bedroom) and the MA-40 (living room). Both work wonders in my home.

I have tried and gotten rid of Bluair and levoit- just inadequate performance and louder than I like. I replaced them with Medify and have been very happy with the switch. If memory serves I have an ma-50 in the living room and ma-40 is each bedroom.