There are many great air cleaners and also there seem to be some terrible ones.
If you do not think your stuff then you will not know exactly what to look for or what types of things you can stay from.
I will easily give you major things that you can look for when dealing with portable air cleaning machines. Many of the portable air cleaning machines actually use UV lights and this can be dangerous and also can entirely make indoor air problems much worse. Like symptoms or worse. The people I was with as well as myself acquired this knowledge in a very difficult way. We had not purchased another portable air purification idea again and now have this basic air purification idea that does myself and others real well. It probably took a week of using the machine non-stop before it was totally going into effect. It absolutely took a lot of time to clean the bad indoor air. This air purifier has a great HEPA air filter but it is entirely part of a triple filter purifying process that cares for weird and terrible indoor air quality. I was completely and totally unaware of these problems until recently but now I see that it is a good thing for me to be thinking about the tasks. I was totally unaware of these problems until I was working on the air purifier in the coming weeks. I will certainly have very good indoor air pollen levels after the times are done.