Airflow & ducts: Refrigeration tips
Short, practical technician tips on airflow & ducts for refrigeration. Check each one against the manual for your exact model before acting.
Air curtains and drafts
Generic
Open cases must be shielded from HVAC grilles, unit heaters and fans — drafts break the curtain, raise run cost and cause defrost problems; check the total electrical load when cases are ganged.
Medium-temp coils ice at the bottom
Generic
Melt water from the top re-freezes on the lower fins and blocks airflow — look low on the coil when a medium-temp box has airflow problems.
General guidance for qualified technicians. The manufacturer's installation and service manual and local codes always take priority. Aurora Star Tech is not affiliated with, endorsed by or sponsored by any equipment manufacturer; brand and model names are used only to identify equipment and belong to their owners.