How high must an indoor evaporator coil be installed above the heat exchanger?

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The installation height of an indoor evaporator coil above the heat exchanger is crucial for effective operation and efficient heat exchange. Installing the evaporator coil too low can lead to improper airflow, which can hinder the system's ability to cool efficiently. The recommended height of 2 to 3 inches provides sufficient clearance for airflow and ensures that the coil can operate effectively in the intended HVAC system.

This height allows for optimal condensation drainage and facilitates the proper distribution of air across the coil, which is important for maintaining energy efficiency and preventing issues such as coil freezing or inadequate cooling. The guidelines are based on best practices established in HVAC standards, focusing on maximizing performance and reducing wear and tear on the equipment.

Maintaining this distance helps prevent airflow obstruction while allowing adequate space for the refrigerant to absorb heat from the indoor air, which is vital for effective cooling and heating processes. Thus, the choice of 2 to 3 inches as the correct installation height aligns with industry standards for maintaining system efficiency and reliability.

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