Acceptable pressure drops for cooling coils?

Acceptable pressure drops for cooling coils typically range between 0.5 to 2.0 inches of water column (in. WC), depending on the specific application and design of the system. Lower pressure drops are preferable to enhance energy efficiency and maintain airflow, while higher drops may indicate issues such as fouling or improper sizing. It's essential to consult manufacturer specifications and system requirements to determine the optimal pressure drop for a given installation.