Bests & Worsts Reviews from Amazon

I am allergic to grass, most trees, dust, and a certain strain of common mold. I have tried a number of air purifiers over the years to battle this. The Honeywell HPA series is the best of these by far. I have 3 HPA100's (two kids' bedrooms + my office), 1 HPA200 (master bedroom), and 1 HPA300 (living room/kitchen). They all run 24/7 keeping me alive and well. Seriously, these are the best. They start to run more loudly when the filters need to be replaced, but I think that's just physics. I have never had a purifier that didn't do this. Do not underestimate the pre-filters! Make sure to change those fairly often. DON'T just vacuum them; I have tried this in the past a few times and every time it just makes the filter incredibly ineffective. You need to put a NEW activated carbon filter in there as it's the activated carbon that filters many chemicals (VOCs) that are terrible for your health! When my hands are really really dry, the buttons don't respond well to touch. This is easily solved by using two fingers instead of one! And finally, the light can be turned dim or all the way off. This is surprisingly a very nice touch as we use them as pseudo-nightlights in the kids' rooms and turn the light off in our bedroom. If you can afford it, make sure to go for the model that sucks in the front and blows out the top as you only have to account for one side on the horizontal. This is MUCH easier to work with in any room than the ones that suck in the back and blow out the front since you then have to make sure there's a clear path to the back and the front. All in all a fantastic purifier. Get some extra filters now so they're ready when you need to do replacements.