Air Purifier Reviews: Best HEPA Air Filters and Air Cleaner Guide

Updated for 2012! Save time with our easy to read air purifier reviews to find the model that best fits your needs.  On this page you will find a report card that shows the factors that are most important in selecting an air purifier - performance, noise level and filter costs(in full review).  There is also a comparison of the top HEPA home air purifiers with additional information such as warranty, room size and key features.  If you click on the Full Review links you will see an in depth review of each air purifier. Need more info?  Help Me Choose, see video reviews or browse all air purifiers.

Air Purifier Ratings Report Card                                           Scale: A B C D E

Note: Performance is based upon the air purifier's efficiency in removing particles with each air pass and measured at 0.5 and 2.5+ micron levels.  The Overall Score is based upon a review of the performance, noise level, filter costs and room size coverage (air flow).  The pricing was taken from manufacturer's web sites in Dec 2011.  Click on the Full Review link to see an indepth review for each air purifier.

HEPA Air Purifier Review

HEPA air purifiers are rated the best by every independent air purifier review we have seen as well as by leading goverment agencies such as the American Lung Association and EPA. This is because the HEPA filter media has been tested for remove the highest percentage of airborne particles with each air pass and generally improves over time whereas filter-less and permanent filters decrease in performance.  Every independent ratings or air purifiers we have seen shows the units without filters to replace as the worst performers when it comes to removing particles from the air.  Whether you suffer from allergies, mold, pollen, dust, or pet dander, etc our strong recommendation is that you select a HEPA based home air purifier to get the cleanest air possible.  While not the lowest cost you definitely get the best performance.  Be sure to also review the noise levels as it may not be reasonable to operate an air purifier in a room if it will be too loud.  Decibel levels can be tricky to understand however when comparing models keep in mind that the noise level doubles for every 10 decibel increase in noise - so a 60 decibel air purifier is twice as loud as a 50 decibel air purifier.  If you are looking to remove gases, odors and smoke you will want to purchase a purifier with either a lot of carbon or possibly an advanced technology such as plasma.

Comparison of Top HEPA Air Purifiers (all 99%+ performance)