thermostat yana daidaita adadin ruwan da ke shiga radiator ta atomatik bisa ga zafin ruwan sanyaya kuma yana canza kewayon zagayawa na ruwa don daidaita ƙarfin watsa zafi na tsarin sanyaya da kuma tabbatar da cewa injin yana aiki a cikin yanayin zafi mai kyau. Dole ne a kiyaye thermostat a cikin kyakkyawan yanayin fasaha, in ba haka ba zai yi tasiri sosai ga aikin injin na yau da kullun. Idan babban bawul ɗin thermostat ya buɗe latti, zai haifar da zafi fiye da kima na injin; Idan babban bawul ɗin ya buɗe da wuri, lokacin dumama injin zai tsawaita kuma zafin injin zai yi ƙasa da haka.
Gabaɗaya, manufar thermostat ita ce hana injin yin sanyi sosai. Misali, bayan injin yana aiki yadda ya kamata, injin na iya yin sanyi sosai a lokacin hunturu ba tare da thermostat ba. A wannan lokacin, injin yana buƙatar dakatar da zagayawan ruwa na ɗan lokaci don tabbatar da cewa zafin injin bai yi ƙasa sosai ba.
