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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?

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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