Is Air Purifier Capacity Important?
Yes!
The Blueair 501 filters to 99.9% efficiency at .3 microns and 99.97% efficiency at .1 micron! But this is only part of the picture. An air purifier must also have the proper capacity to handle the volume of air in the room where it operates in addition to being able to filter very small particles. In other words, while filtration efficiency is important, it is the amount of times that the air in the room is scrubbed by moving it through the filter that really counts.
For example, let's say that your hands are covered with greasy, oily soil. You apply soap but only rub them together one time. Your hands don't get very clean, do they? But if you rub your hands together over and over the greasy dirt is soon rinsed away.
It is exactly the same with air purification. The rating that best describes the combination of filtration efficiency and volume capacity is called Clean Air Delivery Rate or CADR. The Blueair 501 has the most effective combination of filter efficiency and air volume to provide the most 100% clean air of any unit in its room size category tested by AHAM (Association of Home Appliance Manufacturers)! And that's why you invest in air purifier!
The Blueair 501 removes many airborne allergens and lung damaging pollutants such as house and textile dust, pollen, smoke, cat and dog dander, dust mites and their feces, automobile exhaust, soot particles from laser printers and copiers, bacteria, fungus and mold spores. Blueair air purifiers reduce odors, too. For the same particle filtration plus removal of heavy-duty odors like tobacco smoke, Blueair offers special SmokeStop filters.
