1) No heat transfer loss as heat is produced in job itself. So it has high efficiency. 2) As heat is produced in job itself so time required for heating is less. For e.g. in some cases operating time taken for heating is of only one second. 3) By simply controlling frequency, we can control temperature accurately. 4) By simply controlling frequency, depth of penetration of heat can be controlled easily. 5) Very thin material surface can be heated easily. 6) Operation is simple & automatic. 7) For heating low attention is required. 8) Heating can be taken place in vacuum or other special atmospheric condition where other methods are not possible. 9) It is clean and convenient method.