Central AC: Frequently Asked Questions

https://canvas.instructure.com/eportfolios/142732/wayloniepm657/Seven_Important_Rules_to_Save_Money_on_Cooling_this_Summertime

Central air conditioners flow cool air through a system of supply and return ducts. Supply ducts and signs up (i.e., openings in the walls, floorings, or ceilings covered by grills) carry cooled air from the ac