There is a newly published guideline related to residential IAQ and how air filters play a role in protecting occupants. ASHRAE Guideline 24-2015 states PM2.5 “may be one of the most significant indoor airborne contaminants in terms of chronic health impact in residences.” The article states MERV 13 or higher is required to remove these contaminants. You will not find MERV 13 or higher at your local hardware store. Don’t worry, DL Sales Corp has you covered. As the leading Air Filter supplier in Arizona, we have everything from MERV 13 to MERV 15 filters. These are commercial products which can be used to significantly increase indoor air quality in your home. For more information, contact us today. Click the link below to read the entire article.