On this site you'll find the best ratings for air purifiers based on particle tests (video), video reviews that take you inside each machine, comparison charts and consumer opinions. But to get the best air purifier for you watch the video below that will explain the ten technologies and how to properly determine square footage.
Once you have the technology you want and the square footage then read the comparison chart for models that match. After you have chosen several models then watch the complete reviews, videos, and particle tests on those brands from the left menu.
WATCH THE VIDEO BELOW FIRST TO LEARN ABOUT THE 10 AVAILABLE TECHNOLOGIES...
1) Because each room is a different size, and since each air purifier is rated for a different square footage, many consumers buy air purifiers that are either too big or small.
2) The ten different types of air purification technology each work in different ways. I have seen, for example, people buy an ionic air purifier for pollen allergies, only to discover that HEPA is the only one that handles pollen effectively.
3) Most ratings don't account for operating expenses. EX: If you buy the most expensive air purifier on the market you'll also be paying $190 every 6-9 months for the replacement filters (See the comparison chart for replacement prices).
Finally the comparison chart (Video and Visual Version below) on this website will give you a good look at filter prices, warranties, prices and filters included.