Compressor compresses mpweya refrigerant mu mkulu-kutentha ndi mkulu-anzanu gaseous refrigerant, ndiyeno amatumiza kwa condenser (kunja unit) kusungunula kutentha ndi kukhala yachibadwa kutentha ndi mkulu-anzanu madzi refrigerant, kotero unit kunja kuwomba kunja mpweya wotentha. Kenako imapita ku chipangizo chopulumutsa ndikulowa mu evaporator (gawo lamkati). Firiji ikafika pa evaporator kuchokera ku chipangizo chogwedeza, danga limawonjezeka mwadzidzidzi ndipo kupanikizika kumachepa. The madzi refrigerant adzakhala nthunzi nthunzi kukhala mpweya otsika kutentha refrigerant, potero kuyamwa kuchuluka kwa Kutentha kwa evaporator adzakhala ozizira. Chokupiza cha chipinda chamkati chimawomba mpweya wamkati kudzera mu evaporator, kotero chipinda chamkati chimawomba mphepo yozizira; mpweya wamadzi mumpweya udzakhazikika ukakumana ndi evaporator yozizira. Madontho amadzi amatuluka m'mphepete mwa chitoliro chamadzi, chifukwa chake choziziritsa mpweya chimatulutsa madzi. Refrigerant ya gaseous imabwerera ku kompresa kuti ipitilize kukanikizana ndikupitiliza kuzungulira.