Ama-heaters angaphandle alungele ukushisisa amanzi, amafutha, izinyibilikisi, usawoti kanye nama-asidi.Ukuguquguquka kwesicelo se-heater ngaphezulu kohlangothi kuthuthukiswa ngezinto zokuzikhethela ze-sheath, izilinganiso ze-kilowatt, izivalo zetheminali nezindlela zokukhweza.