What is the airflow path of an outdoor pull-through coil?

In an outdoor pull-through coil, the correct airflow path is that air moves from the outside to the inside of the coil. This configuration is designed to maximize heat exchange efficiency by drawing outdoor air through the coil, which is important in heat transfer processes. The primary function of this setup is to cool or heat the air effectively as it passes through the evaporator or condenser coil.

Understanding this path helps in comprehending the basic operations of HVAC systems, especially in outdoor units where the coil is located. The airflow direction plays a crucial role in the overall efficiency of the system. It ensures that the refrigerant inside the coil absorbs heat from the air, allowing for effective temperature regulation in the conditioned space.

Knowledge of this airflow path is important for troubleshooting potential issues, preventing airflow blockages, and ensuring the system operates efficiently.