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Walk-In Evaporator Units and How They Work

What are refrigeration evaporator coils? A refrigeration evaporator coil is one of the most important parts of a walk-in cooler or freezer. It absorbs heat when warmer air is passed through a walk-in refrigeration system, thereby cooling the inside of the unit.

In other words, moisture from the air freezes onto the refrigerator evaporator coil—the cooling coils inside the freezer—and helps form a barrier that insulates against heat transfer. Airflow is also minimized as the passages inside the refrigeration evaporator tend to narrow because of build-up of ice. Each walk-in freezer evaporator also features a defrost cycle that helps melt the frost or ice that gradually builds up in the refrigerator evaporator coil. Water that results from the melted ice is then drained from the freezer

Evaporator coils, also referred to as unit coolers, are furnished as part of a remote refrigeration system for walk in coolers and freezers. Their main purpose is to blow cold air inside the walk in structure and keep stored products cool.

coils are ready to mount in position on a walk in and are available with air (off cycle) defrost, electric defrost or optional reverse cycle defrost when equipped with the Master Controller Reverse Cycle Defrost system.

Standard Features

Properly sized expansion valve
Room thermostat
Energy efficient EC motors on single phase coils
Electric defrost models feature defrost termination/fan delay controls and drain line heaters