I-thermostat ilungisa ngokuzenzakalelayo inani lamanzi angena ku-radiator ngokwezinga lokushisa lamanzi apholile futhi ishintsha ibanga lokujikeleza kwamanzi ukuze ilungise amandla okushisa ohlelweni lokupholisa futhi iqinisekise ukuthi injini isebenza ngaphakathi kwebanga lokushisa elifanele. I-thermostat kumele igcinwe isesimweni esihle sobuchwepheshe, ngaphandle kwalokho izothinta kakhulu ukusebenza okuvamile kwenjini. Uma i-valve enkulu ye-thermostat ivulwa sekwephuzile, izobangela ukushisa kakhulu kwenjini; Uma i-valve enkulu ivulwa kusenesikhathi, isikhathi sokushisa kwangaphambili kwenjini sizokwelulwa futhi izinga lokushisa lenjini lizoba liphansi kakhulu.
Sekukonke, inhloso ye-thermostat ukuvimbela injini ukuthi ingabi bandayo kakhulu. Isibonelo, ngemva kokuba injini isebenza kahle, injini ingase ibande kakhulu ngesivinini sasebusika ngaphandle kwe-thermostat. Kuleli qophelo, injini idinga ukumisa okwesikhashana ukujikeleza kwamanzi ukuqinisekisa ukuthi izinga lokushisa lenjini aliphansi kakhulu.
