Forced Air System
This system is by far the most common type of home heating and cooling system.
DistributionAir heated in a furnaceAir distributed from furnace through ductwork and into room by registers
Fuel SourcesFurnaces may heat air using various fuel sources such as natural gas, propane, oil or electricity
AdvantagesOnly distribution method that can used for coolingAir may be filteredAir may be humidifiedAir may be dehumidifiedInexpensiveFurnace can attain highest AFUE
DisadvantagesRequires ductwork and takes space in wallsFurnace fan can often be heardMoving air can distribute allergensAir requires filtration and regular maintenance.