I have used this immerssion rod for water heating for two months in my hostel days at some near past.the time taken to heat the water moderately is arround 16 to 20 min. It has a hook for hanging at borders of bucket but its design pireced my bucket as it get contact with its walls.
But the steel like finishing is corroded or peeled off at early days only. Suddenly it stopped working with no known reason every thing is all right to see externally but not working from that day onwards. No service is available and every one suggest that best to buy new. So im dissapointed with it.