Reviews for 3M Filtrete Filters are available on Amazon.com, as of 2015. The highest-rated filters are the Filtrete Micro Allergen Defense Filter with 4.5 out of five stars from 763 reviewers and the Filtrete Healthy Living Elite Allergen Reduction Filter with 4.6 out of five stars from 514 reviewers.
Before purchasing a Filtrete filter, a homeowner should make sure to choose one at the right rating for his air conditioning or heating unit. Otherwise, the filter restricts too much air flow while blocking out the dirt. Reviewers praise these Filtrete filters for reducing allergy symptoms caused by dust, pet dander and other particles.