What is MERV? How do you choose the right MERV rating for your home or facility, and is it important? You buy air filters whether you own a home or manage a business. You do this because indoor air quality is essential, and every HVAC system requires you to change the filters regularly. Your air quality and circulation efficiency depend on clear, clean, unclogged air filters as part of the system. If you go to the store or search for air filters online, you'll need to know your unit's filter … [Read more...] about What Are MERV Ratings?