I grew tired of researching Air Purifiers, found Phillips 3200i on special for AU$365, I am happy with it, it’s over sized for the bedroom, heaps quieter than my old Dyson which now sits in the lounge room.
I had the same question. I just bought the 3200 because of its higher CADR and available reviews, whereas there are very few reviews for the 2200. I like the HouseFresh reviews, and they have reviewed the 3200, which was a point in favor.
I'm not sure if it was the right decision or not, but the 2200's CADR was also just barely large enough to cover my needs, so I figured the 3200 was better for my specific situation.
The design of the 3200 is flawed, mixing intake air with the exhaust air.
You can turn a reasonably priced cylindrical air purifier, such as the Philips 2200 into the equivalent of a $4000 smoke extractor. Buy a cheap 1kg netting bag of activated carbon pellets and put it inside the cylindrical filter (wash and dry the bag first). The supplied/replacement filters for any brand aren't great. The main thing when purchasing a purifier is that the fan is quiet and powerful, then just apply that trick. Over a certain price point, you're just paying for brand.
Dyson is the least effective and the most expensive.
You're looking for around 600 CFM total, so 2 of the Philips 3200 should do it, however they would need to be on Turbo all the time which is pretty loud at 53 decibels. On Medium mode it's quiet enough but only produces 170 CFM, so you need 3-4 units to achieve 5 ACH.
Usually air purifiers don't do much from the other room. Is this one large space or is it subdivided into rooms? That will effect how many air purifiers and which exact models.
Avoid the Philips 3400, or any other humidifier that uses warm mist / cool mist / ultrasonic technology. The technology produces large amounts of air pollution (or in the case of the Philips, it clogs its own filter with the pollution it generates).
Top Air Purifiers on Reddit
1
Coway
Airmega AP-1512HH Mighty
87% positive of 128 users
Durable, effective for allergens/odors, but loud on high.
dgkimpton
