APR stands for Accumulair Performance Rating. This rating has been established by the manufacturer of the Accumulair Filters. This rating exists to demonstrate the different levels of efficiency throughout the Accumulair filter line. Generally speaking, the higher the APR, the better the filter performs in capturing small airborne particles. This rating system is an internal rating system and applies to Accumulair filters only.
Minimum Efficiency Reporting Value (MERV) is a measurement of how effective an air filter is at removing dust particles and airborne contaminants from the air as it passes through the filter. A higher MERV rating means fewer dust particles and airborne contaminants will pass through the filter.
| MERV 8 | MERV 11 | MERV 13 |
 Household Dust |
Household Dust |
Household Dust |
|
Pollen |
Pollen |
Pollen |
|
Lint |
Lint |
Lint |
|
Dust Mite Debris |
Dust Mite Debris |
Dust Mite Debris |
|
Mold Spores |
Mold Spores |
Mold Spores |
 Pet Dander
|
Pet Dander |
Pet Dander |
|
Car Fumes
|
Car Fumes |
Car Fumes |
|
Smoke
|
Smoke |
Smoke |
|
Cough & Sneeze
|
Cough & Sneeze |
Cough & Sneeze |
|
Bacteria
|
Bacteria
|
Bacteria |
|
Virus Carriers
|
Virus Carriers
|
Virus Carriers |
