The thermoelectric cooling system, also called Peltier Effect, is a solid-state method of heating transfer through dissimilar (P shape & N shape ) semiconductor materials. The complete system includes a semiconductor module (P shape & N shape semiconductor clamped with two ceramic chips ), an international and an external heat exchanger. To obtain higher energy efficiency , low -speed-and-noise fans are fitted with heat exchangers.

During operation, direct current goes through the semiconductor module which causes heat to be transferred from inside (the endothermic joint ). The heat is removed from an insulated spare which results in an ideal cooling compartment.