Rating : - No problems
I bought a couple of these last year for I have some health problems that require me to be in a clean air environment. These have been great they really do a good job I leave mine on highest speed all the time which is noisy but when it comes to breathing fresh air this is well worth it. It does make some snapping sounds just before you need to clean it. This just lets me know that they need cleaning. I clean my cells with Clorox clean up cleaner I just squirt them then use hot water and the job is done. the only thing is that when it comes to drying the cell before using it it takes a while but this is my only complaint