• Al Aldrete

Filter Ratings for Air conditioners

Ever gone to look for a filter for your air conditioner and been completely daunted by the seemingly endless selection. Not only does the size of the filter matter, but then you have different ratings. And it seems that brands have different ratings for their filters! Well this is partially true. There is actually some uniformity of the rating systems used. And that is what this blog post is about.

According to Services Champions, (servicechampions.com), there are five (5) ratings you will come across:

1) Microns and particulate matter


3) FPR

4) MPR

5) HVAC air filters dimensions