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.
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 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 Medify MA-25. High-end HEPA filter. Bought 4 for work during COVID 6 years ago. Bought more for myself. At low and medium speed it is quiet so as not to bother kitty near litter box. Recommend pet version with charcoal for even better odor control. She also likes to sit in front of the much larger and noisier version in my living room. Maybe reminds her of outside wind when she was abandoned.
Sillyci
