How does a self defrosting freezer work?

A self-defrosting freezer operates using a heating element that periodically activates to melt any accumulated frost or ice on the evaporator coils. When the frost melts, the water drains into a pan, usually located at the bottom of the appliance, where it evaporates. This process is typically controlled by a timer or a thermostat that monitors the temperature and frost buildup. As a result, the freezer maintains optimal performance without the need for manual defrosting.