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Air Filtration Guide

Air Filtration Guide

Air Filter FAQs

What is a MERV rating?
How often should I change my filter?
How do I find the dimensions of my air filter?
Can I wash or vacuum my filter to make it last longer?
Why do I need a filter?
Can I use a HEPA filter for my furnace?

Will the compatible filter replace my OEM filter if it is smaller?
What is the difference between MERV, MPR, and FPR ratings on air filters?
Are your air filters individually wrapped?
Do your air filters have arrows for installation direction?

Charts & Tables

MERV Rating – Contaminant Removal Guide
MERV Rating - Actual Particle Size Removed and Efficiency in Percentage

References

References for Air Filtration Guide Articles

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