Modern forced-air heating systems have two complete teams of ducting for movement of heated and cooled air with the home. And comfortable air ducting exits the furnace just downstream from the furnace heat exchanger. Air is blown across the heat exchanger through the furnace fan, which heats it before it enters the ducting and is
Modern forced-air heating systems have two complete teams of ducting for movement of heated and cooled air over the home. The warm air ducting exits the furnace just downstream in the furnace heat exchanger. Air is blown around the heat exchanger by the furnace fan, which heats it before it enters the ducting which is
Modern forced-air heating systems have two complete teams of ducting for movement of heated and cooled air over the home. And comfortable air ducting exits the furnace just downstream in the furnace heat exchanger. Air is blown throughout the heat exchanger by the furnace fan, which heats it before it enters the ducting and it
