Evaporator Coil Defrost Heater 500mm Length, Power(W) :200, Voltage (V):230 Defrost tubular element is used on the evaporators and refrigerating system which will defrost finned bodies. They are extremely flexible and used as a practical solution to its capacity to form to the shapes of the various types of evaporator.we are major manufacturers and suppliers of refrigeration heaters in india.