Central Air: What House Owners Are Required to Know

https://gumroad.com/reiddabsub/p/ten-unusual-tips-for-keeping-cool-with-a-struggling-a-c

Central air conditioners distribute cool air through a system of supply and return ducts. Supply ducts and registers (i.e., openings in the walls, floorings, or ceilings covered by grills) bring cooled air from