MERV Filter Rating for COVID: Guide to Cleaner, Safer Air
Here is what the pandemic actually changed inside your house. Somewhere between March 2020 and the first supply-chain-rattled summer, the MERV rating on your air filter quietly became a health decision. The right MERV filter rating for COVID, flu, RSV, and the fine particulate that drifts through every open window stopped being trade knowledge and … Read more