Austin Air HealthMate Plus HM450 + Sandstone

This unit has worked very well initially. Replacement filters are expensive but very reasonable if in fact the filters last 5 years. It will be awhile before we find out if this is true.

Does its job. Spouse is breathing better since introducing it into our household. Cant even hear it on the lowest setting. Highest setting is pretty loud. Maybe comparable to a light/small vacuum sound. House doesnt have lingering cooking smells after meal time. Will be purchasing a second one.

Love this! I baught 2. One for my bedroom and one for my living room. They are really helping with the new furniture off gassing. I still had to get rid of my bed frame because it was MDF and pressboard and my face was right by the headboard all night. The filter could not filter the air between the head board and my face between each inhale. Although, a fan might have helped if I could have tolerated the wind on my face. Regardless, this filter is great for the MDF electric fireplace (since I don't put my face against that one), new sofa, new area rug , and new accent chairs (all in the living room), oh and new kitchen table and chairs and my new to me used MDF and pressboard desk located in my bedroom. Suggestion: Don't sell everything and start over. Just beg you mom for all of your grandmothers furnature (live and learn). But, these filters are a life saver! On high they are a bit loud. So after the initial air clearing phase, we now turn them down when we are in the room. We turn them on high when we are not using the room (eg living room when sleeping and bedroom when awake) and every time we leave the house. (FYI, before all of this new Furnature, I did not know about chemical sensativity. So, you might be more sensative than I. Still these are great for the appropriately sized room.)

They are a bit pricey, but I bought this to deal with 3D printing in my office (along with an air quality monitor). The monitor has only gone off once, so I started up the filter, and a few minutes later, it was all clear. Then I started running it on medium all the time and noticed my stuffy nose cleared up, so it is obviously doing some good work. It is pretty loud running on high, but it is actually the volume of airflow, not the fan that I hear.

I am only giving it 4 stars because I need more time. Have had it about a week - not sure it deserves 5 stars yet. House while I live in it - is under construction. Have some Allen Breathsmarts 45i and they have done fairly well. But after adding the Healthmate while under construction with the current breathsmarts - I feel like I am breathing hospital air - Healthmate made a big difference. On the lowest setting, barely noticeable sound (you will hear it a little). Once you go to 2 or 3, it definitely creates a whooshing sound. I would think the lowest setting is fine for most situations UNLESS you have active wild fire around you or like me living in a house under construction. If you live in an apartment, the lowest setting is fine. Obviously you need to fit to size your needs and the quality of air it must clean. Breathsmarts self adjust if pollution is detected, Healthmate is old school analog setting (speed 1,2,3). I am not sure if I was living through construction the Healthmate is something I need. But I also spend time in a place with FREQUENT wildfires, this thing would be perfect. Healthmate certainly seems to live up to its reputation, you can hear it, but it sure does clean the air. 15lbs of active carbon and a few other tricks to clean up vocs, seems to be working quite well. If you need next level clean air, probably a good choice, worked well for me. Regardless of the marketing hype from other companies, if you want to suck air through 15lbs of active carbon and an air filter you are going to hear something. That is simple reality. If 15lbs of carbon is spread across a 6' unit, it would be whisper quite, but who wants a giant machine in the house.