Review on Hamilton Beach TrueAir Air Purifier for Home or Office - Permanent HEPA Filter, Ideal for Allergies and Pets, Whisper Quiet, 160 sq ft Coverage, Black by Natalie Noleal

This product works well. The dust content of the room air differs significantly. This is a new purchase so time will tell the quality of workmanship. However, from the comments I've seen (roughly 3 micron filter vs 0.3 micron filter), I wanted to say that you have to decide why you're buying the device. I have no medical need for the device. However, I have allergies that irritate my sinuses and cause infections from time to time. I bought it to reduce dust pollution and keep my room clean. If that's your goal, it should work. To put things into perspective I found this explanation of micrometers online. This should help you make decisions. For people having trouble with relativity, this should help. For comparison, the average diameter of a human hair is 150 microns, while dust is typically 5 to 10 microns. 25 microns. - Particles visible to the naked eye 10 µm - Heavy dust, lint pollen 5-10 µm - Medium dust, plant spores, mold 1-5 µm - Bacteria, light dust, animal hair 0.3-0.1 µm - Bacteria, tobacco smoke, metal exhaust gases0 . 001-0.01 µm - Viruses[.] particle size in microns