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forced warm-air system click to hear : forced warm-air system

In this type of system, air is heated in a furnace and blown by a fan through a network of ducts to the rooms of a dwelling.
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See forced warm-air system in : french | spanish
air return furnace plenum elbow wall stack section damper main duct branch duct hot-air register

air return click to hear : air return

Duct directing air from a room back to the furnace to be reheated.

furnace click to hear : furnace

Device creating heat and blowing the air through the duct system.

plenum click to hear : plenum

Joining duct between the furnace and the hot-air distribution system.

elbow click to hear : elbow

Connection or part of a duct for altering the direction of the hot air.

wall stack section click to hear : wall stack section

Vertical duct carrying hot air upward toward the registers on the upper floors.

damper click to hear : damper

Mechanism for regulating the volume of air passing through a duct.

main duct click to hear : main duct

Duct that leaves the furnace and carries hot air toward the branch ducts.

branch duct click to hear : branch duct

Duct, usually made of sheet metal, carrying the hot air toward the registers.

hot-air register click to hear : hot-air register

Adjustable grill located at the end of a duct through which hot air is distributed throughout a room.