Igumbi lokomisa umoya obandayo lisetyenziswa inkqubo: sebenzisa umoya onobushushu obuphantsi kunye nokufuma okuphantsi, qaphela ukujikeleza okunyanzeliswayo phakathi kwezinto ezipakishweyo, unciphisa ngokuthe ngcembe umthamo wokufuma ukufikelela kwinqanaba elifunekayo.Kwinkqubo yokujikeleza okunyanzeliswayo, ubushushu obuphantsi kunye nobushushu obuphantsi komoya buhlala bufunxa ukufuma ukusuka kumphezulu wezinto, umoya ogcweleyo udlula kwi-evaporator, ngenxa yokuphuma komphunga wefriji, ubushushu bomphezulu we-evaporator buhla ngaphantsi kweqondo lokushisa emoyeni. Umoya upholile, umswakama ukhutshwa, emva kokuba umswakama okhutshiweyo ukhutshwe ngumqokeleli wamanzi. Ubushushu obuphantsi kunye nomoya wokufuma ophantsi emva koko ungene kwi-condenser kwakhona, apho umoya ufudunyezwa ngubushushu obuphezulu be-gaseous refrigerant evela kwicompressor, yenze umoya owomileyo, emva koko uxube nomoya ohluthisiweyo ukuvelisa ubushushu obuphantsi kunye nomoya ophantsi, ojikelezayo. ngokuphindaphindiweyo. Izinto ezomisiweyo ngesomisi somoya obandayo azigcini nje ngokugcina umgangatho wazo wokuqala, kodwa zilungele ukupakishwa, ukugcinwa nokuthutha.