A worktop freezer in a quick-service kitchen, display reading 10.

Under the lid section over the evaporator, the fan compartment was packed with frost, with ice built up on the coil.

A freezer’s coil runs well below zero, so any moisture that gets into the box lands on it as frost. The defrost cycle exists to clear that, several times a day. When the defrost doesn’t run, or the heater is open, or a gasket is letting warm humid air in every time the lid closes, the frost builds faster than it clears. Eventually the fan can’t move air and the box temperature climbs.

If you can see frost through a freezer’s fan grille, call while the product is still frozen.

If it heats or cools, we handle it. 📞 718-802-1700

Service: Commercial refrigeration repair.