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.

Air filtration systems can be lifesavers for the right homes. To find out more, House Digest spoke to HVAC expert Richie Drew ...

But not every HVAC system can accommodate a thicker filter—the most common size is 1 inch thick—though you can retrofit the ductwork of some systems to accept one. Something else to keep in ...