Describe the role of a blower motor in an HVAC system.

The blower motor plays a crucial role in HVAC systems by moving air across the heat exchanger or evaporator coil, which is essential for the distribution of conditioned air throughout a space. When the HVAC system is in operation, the blower motor draws air from the indoor environment and pushes it over the heat exchanger (in heating mode) or the evaporator coil (in cooling mode). This process allows the air to be heated or cooled before it is circulated back into the living area.

This movement of air is vital for maintaining a comfortable temperature and ensuring that the conditioned air reaches all parts of the space effectively. It helps to create a consistent airflow, avoiding hot or cold spots, and enhances the efficiency of the HVAC system. Without a properly functioning blower motor, the system would be unable to effectively circulate air, leading to poor temperature control and comfort issues.