Compressor imakanikiza firiji ya gaseous kukhala firiji ya gaseous yokhala ndi kutentha kwakukulu komanso kuthamanga kwambiri, kenako imatumiza ku condenser (gawo lakunja) kuti ichotse kutentha ndikukhala firiji yamadzimadzi yotenthetsera bwino komanso kuthamanga kwambiri, kotero chipangizo chakunja chimatulutsa mpweya wotentha. Kenako chimapita ku chipangizo chosungira ndikulowa mu evaporator (gawo lamkati). Firiji ikafika pa evaporator kuchokera ku chipangizo chopopera, malowo amawonjezeka mwadzidzidzi ndipo kuthamanga kumachepa. Firiji yamadzimadzi imasanduka nthunzi ndikukhala firiji yotenthetsera yochepa, motero imayamwa kuchuluka kwa mpweya. Kutentha kwa evaporator kudzakhala kozizira kwambiri. Fan ya chipangizo chamkati imapukusa mpweya wamkati kudzera mu evaporator, kotero chipangizo chamkati chimapukusa mphepo yozizira; nthunzi yamadzi mumlengalenga imasanduka nthunzi ikakumana ndi evaporator yozizira. Madontho amadzi amatuluka kudzera pa chitoliro chamadzi, ndichifukwa chake chopukutira mpweya chimatulutsa madzi. Firiji ya gaseous imabwerera ku compressor kuti ipitirize kukanikiza ndikupitiliza kuyendayenda.