Isalathisi sokusebenza kwesihluzi somoya sibhekisa kakhulu ekusebenzeni kakuhle kokususa uthuli, ukumelana, kunye namandla okugcina uthuli. Ukusebenza kakuhle kokususa uthuli kunokubalwa ngokwendlela elandelayo:
Ukusebenza kakuhle kokususa uthuli = (G2/G1)×100%
G1: Ubungakanani bothuli oluphakathi kwisihluzi (g/h)
G2: Ubungakanani bothuli obuqhelekileyo obunokuhluzwa (g/h)
Ukusebenza kakuhle kokususa uthuli kuxhomekeke kubukhulu besuntswana. Ukuxhathisa kuthetha uxinzelelo lomahluko. Ngokwesiseko sokuqinisekisa ubuncinci besihluzo, uxinzelelo oluncinci lomahluko luya kuba ngcono kakhulu. Ukuxhathisa okwandayo ekugqibeleni kuya kubangela ukusetyenziswa kwamandla amaninzi. Ukuxhathisa okukhulu kakhulu kuya kubangela ukungcangcazela kwecompressor yomoya. Ke ngoko, kufuneka utshintshe into yesihluzo xa ukuxhathisa kwesihluzo kufikelela okanye kukufutshane noxinzelelo lwevacuum oluvunyelweyo. Ukongeza, umthamo wokubamba uthuli uthetha uthuli oluqokelelweyo oluqhelekileyo kwindawo nganye. Kwaye iyunithi yayo yi-g/m2.