Air Filters: Your Guide to Choosing and Replacing Them

{Choosing|Selecting|Picking out} the {right|ideal|correct|proper} furnace filter and changing it when it {gets|becomes|is} dirty is as important to your HVAC system as changing the oil is to your car. Each plays a {critical|vital|crucial} {part|role|function} in keeping its system {running|operating|working} safely, efficiently and for a long time.