electric furnace 
Device using electricity for creating heat and blowing it through the duct system.
Removable panel for accessing the furnace’s components.
Device connecting the electric furnace to the dwelling’s electric system.
Joining duct between the furnace and the hot-air distribution system.
Duct directing air from a room back to the furnace to be reheated.
Duct directing hot from the furnace to the rooms.