ESCO Air Conditioning Practice Exam 2025 – The All-in-One Guide to Exam Success!

The blower is crucial for maintaining pressure differences in HVAC systems because it is responsible for circulating air throughout the system. The blower creates airflow that moves the air through the system, enabling the system to maintain the necessary pressure differences for proper operation. Without the blower, air would not be circulated effectively, leading to issues with pressure differentials and overall system performance.

While the compressor, condenser, and evaporator are all essential components of an HVAC system, they are not directly responsible for maintaining pressure differences like the blower. The compressor is responsible for pressurizing the refrigerant, the condenser is where the heat from the refrigerant is dissipated, and the evaporator is where the heat is absorbed. Each of these components plays a vital role in the cooling process but does not directly control pressure differentials within the system like the blower does.