I-screw compressor enezigaba ezibini inokupholisa okuphakathi emva koxinzelelo lwesigaba sokuqala kunye noxinzelelo lwesigaba sesibini, nto leyo ekhokelela ekusasazweni komlinganiselo woxinzelelo olusengqiqweni. Oku kusindisa amandla angaphezu kwe-8%-15% kune-single-stage compressors, nto leyo egcina umlinganiselo wokusebenza kakuhle kwamandla ophezulu.
Uxinzelelo olunezigaba ezibini lunciphisa umlinganiselo woxinzelelo lwesigaba ngasinye, nto leyo ebangela ukuba amaqondo obushushu okukhupha umoya aphantsi kunye nomthwalo ophantsi kwiibheringi zecompressor. Oku kuqinisekisa ukusebenza okuzinzileyo nokuthembekileyo okuqhubekayo kuzo zonke iimeko zemozulu.