Isalathiso sokusebenza kwesihluzi somoya sibhekisa ikakhulu ekususeni uthuli ukusebenza kakuhle, ukuxhathisa, kunye nomthamo wokubamba uthuli.Ukusebenza kokususa uthuli kunokubalwa ngokwendlela elandelayo:
Ukukhupha uthuli ukusebenza kakuhle=(G2/G1)×100%
G1: Umyinge wexabiso lothuli kwisihluzi (g/h)
G2: Umyinge wexabiso lothuli olunokuhluzwa(g/h)
Ukusebenza kokususa uthuli kuxhomekeke kubungakanani bamasuntswana.Ukuchasa kuthetha ukunyanzeliswa koxinzelelo.Kwisiseko sokuqinisekisa ukucoleka kwesihluzi, umahluko omncinci woxinzelelo uya kuba ngcono kakhulu.Ukuxhathisa okwandayo ekugqibeleni kuya kubangela ukusetyenziswa kwamandla amakhulu.Ukuxhathisa okukhulu kakhulu kuya kubangela ukungcangcazela kwecompressor yomoya.Ke ngoko, kufuneka ubeke endaweni yesihluzi xa isihluzo sifikelela okanye sisondele kuxinzelelo lwevacuum evunyelweyo.Ukongeza, umthamo wokubamba uthuli uthetha umndilili oqokelelweyo wothuli kwindawo nganye.Kwaye iyunithi yayo yi-g/m2.