In a forced air system, which component is responsible for delivering heated air to the conditioned space?

In a forced air system, the component responsible for delivering heated air to the conditioned space is the blower. The blower plays a critical role in the operation of the heating system by moving air through the ductwork and into the various rooms of a building.

When the heating system operates, the furnace heats the air using a heat exchanger. The blower then draws the heated air from the furnace and forces it through the ducts, ensuring that the warm air is distributed effectively throughout the designated living spaces.

While the heat exchanger is crucial for heating the air and the furnace generates the heat, it is the blower that actively circulates the warmed air into the room, providing comfort. The thermostat monitors and regulates the temperature but does not deliver the air itself—its job is to signal the system to turn on or off based on the current temperature relative to the set point. Therefore, the blower is the key component specifically tasked with the delivery of heated air in a forced air heating system.