Ezimotweni zikagesi ezimsulwa, ibhethri elisebhodini ibhethri lamandla kagesi aphezulu, futhi isifudumezi sikagesi ngokuvamile sizokhetha i-voltage ephezulu, ngoba i-voltage iphezulu futhi amandla kagesi afanayo angaguqulwa abe amandla okushisa ngaphezulu.
Ngokwendlela i-heater kagesi ye-PTC esebenza ngayo ingabuye ihlukaniswe ngokushisa komoya okuqondile kanye nokufudumeza komoya okungaqondile ngokushisisa amanzi.Isimiso sokushisa okuqondile komoya kanye nesomisi sezinwele zikagesi, kuyilapho uhlobo lwamanzi okushisa luseduze nendlela yokushisa.
Umkhiqizo owethulwe ngalesi sikhathi i-PTC air heater.