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Air Filter Comparison

MERV FPR MPR Filters
The higher the rating the smaller the particles filtered
4 - - Large Particles: Fibers, Dust, Lint, Dust Mites, Pollen
6 - 300 Same as above along with: Pet Dander
8 5 600 Same as above along with: Smaller Dust Mites and Mold Spores
11 7 1000 Same as above along with: Even Smaller Bacteria and Mold Spores
13 10 1900 Same as above along with: Smoke, Smog, Allergens and Odor Carrying Particles

Brand Size Price Qty $ Per Filter MERV FPR MPR Life in Months $ Per Month
AIRx 20x20x1 34.95 6 5.83 13 - - 3 1.94
Aerostar 20x20x1 39.99 6 6.67 13 - - 3 2.22
Rheem 20x20x1 31.67 12 2.64 - 4 - 3 0.88
EZ Flow 20x20x1 31.95 12 2.66 4 - - 1 2.66
EZ Flow II 20x20x1 21.38 12 1.78 4 - - 1 1.78
NaturalAire 20x20x1 49.36 12 4.11 8 - - 3 1.37
NaturalAire 20x20x1 95.88 12 7.99 10 - - 3 2.66
NaturalAire 20x20x1 143.98 12 12 13 - - 3 4
AIRx 14x25x1 31.95 6 5.33 13 - - 3 1.78
Aerostar 14x25x1 34.99 6 5.83 13 - - 3 1.94