What is the most important consideration when installing a unit with an air cooled condenser?

The most important consideration when installing a unit with an air-cooled condenser is ensuring adequate airflow. Proper airflow is critical because air-cooled condensers rely on ambient air to dissipate heat from the refrigerant. If airflow is obstructed or insufficient, it can lead to increased pressure within the condenser, reducing the system's efficiency and potentially causing overheating. Adequate airflow contributes to the system's overall performance, effectiveness in heat exchange, and durability.

While cost of installation, size of the condenser unit, and type of refrigerant are important factors to consider, they do not have the immediate and critical impact on the operational efficiency of the system like adequate airflow does. For instance, even if the unit is cost-effective or appropriately sized, it will not function optimally without sufficient airflow, leading to performance issues or even system failure.