Which component is primarily responsible for distributing heated air throughout the home?

The component responsible for distributing heated air throughout the home is the blower fan. Once the furnace heats the air through the heat exchanger, the blower fan plays a crucial role in circulating that warm air through the ductwork and into the various rooms of the house. It ensures an even distribution of heat, promoting comfort and efficiency in heating the entire living space.

The combustion chamber, while important for burning fuel to generate heat, does not distribute the heated air itself. The heat exchanger is the part that transfers heat from the combustion process to the air, but it also does not move air. The flue pipe is used to vent exhaust gases outside but has no role in the air distribution within the home. Thus, the blower fan's function is critical for the effective movement of warm air, making it the correct answer.