Follow CR's advice for improving indoor air quality with filters for your HVAC systemSmoke from the Palisades Fire fills the ...

Look around online and you'll also find widespread ... The reasoning is that the higher-rated filters can reduce airflow to the HVAC system, which makes it work harder and could put more strain ...

More Ways to Keep Smoke Out of Your Home In addition to using a high MERV filter in your HVAC system, follow these additional steps to keep healthy air in your home and smoke out. What to Do Now ...