BBCNEWS Click May 29, 2021 11:47:00
When i was running the filterfor 2a hours, once again, it brought the air quality index all the way down to zero with no dust detected. and when i did kick up some dust, it quickly brought the levels down again. the final machine i tested was the dyson purifier hot and cool formaldehyde, which is called that because it not only removes dust from the air, but can also break down formaldehyde. one thing i did like about this machine is as well as being a passive airfilter, you can also use it as a fan on a hot day to blow air at you and cool you down, which the other two didn't do. and i think i...