This infographic explains air filter ratings and the advantages of frequently changing air filters. In particular, a visual introduction of MERV 6, MERV 8, MERV 11 and MERV 13 is provided and their basic features. While MERV 6 protects from lint, household dust and pollen as opposed to the ultimate protection brought by MERV 13. As far as the advantages of frequently changing air filters are concerned, there is a slight difference between the air filters at home and at work. #infographics
Best Way to Change Furnace Filters A reader wonders how often to change furnace filters to keep the air clean in her home. Learn the frequency with which homeowners should replace a furnace filter. From MOTHER EARTH NEWS magazine.