Wonder if top-rated furnace filters are worth investing in for optimal air quality and efficiency? Check out recommendations to upgrade your home's HVAC system.

Clean the air in your home and protect your HVAC system with one of these top-performing air filters from CR’s testsThicker filters do their job better and require less frequent replacement, but ...

to each filter, which was developed by ASHRAE (formerly the American Society of Heating, Refrigerating and Air-Conditioning Engineers). But 3M and Home Depot have developed their own ...