I received the Conair medium room air purifier in exchange for an honest review.  I am thrilled with it!!!!  It has changed my life.  I have it in the bedroom and it works so well.  I have never slept better.  I have had other air purifiers that have not worked at all.  I believe this works to eliminate allergens from the air because I am sleeping through the night.  I would buy this product in a heartbeat!!  I have already recommended this product to friends and family and I will continue to do so.  5 STARS