Cooling coils trap dust, soil, grime, and other troublesome deposits that reduce the heat transfer efficiency of HVAC units. If the coils are dirty, the airflow becomes blocked which requires the Air Handling Unit blower to draw more energy as it tries to move air through the clogged coil. This will also create additional strain on the condensing unit. This additional strain will result in the loss of efficient cooling throughout the occupied space and lessen the life of the system components.Although a coil may look clean on the surface, the majority of the debris is logged within the coil. What most people see is dirt accumulation on the fins that are designed to protect the coil. Coil cleaning will ensure efficient air flow through the Air Handing Unit which helps for optimal system efficiency.