Commercial refrigeration and freezer units have condenser coils responsible for throwing off heat to the atmosphere that has been extracted from the chamber, holding the items intended to be refrigerated or frozen. To facilitate that heat exchange process, these coils, when contained within the appliance’s cabinet, airflow directly through their structure by a fan in the condensing unit. All matter of dust and debris are also drawn in with the air, potentially clogging the coils over time. Experts recommend frequent coil cleaning to ensure good airflow, often at periods of every 3-4 months as a minimum, and even more frequently in extremely dusty or dirty environments.