Izinhlobo ezahlukene zamafutha okupholisa zithinta ukusebenza kwama-compressor okupholisa aphindayo ngokwemibandela yokugcoba, ukuvalwa, ukudlulisa ukushisa, ukuzinza kokusebenza kanye nempilo yesevisi. Amafutha emaminerali anokuhambisana okuhle nama-refrigerant asendulo njenge-R22 futhi enze amafilimu amafutha aqinile. Angakwazi ukugcoba kahle ama-pistons, ama-valve plates, izinduku zokuxhuma ze-crankshaft nezinye izingxenye, futhi ahlinzeke ukusebenza okuvalayo okuhle ukuze kuncishiswe ukuvuza kwangaphakathi kweyunithi. Noma kunjalo, anokugeleza okubi kwezinga lokushisa eliphansi, athambekele ekubeni ama-wax futhi abhekane nokuhlinzekwa kwamafutha okungalungile ngaphansi kwezimo zokushisa eziphansi, futhi akahambisani nama-refrigerant amasha anobungani nemvelo afaka i-R134a ne-R410A. Amafutha e-POE synthetic anokuxubana okukhulu nama-refrigerant e-HFC kanye nokugeleza okuhle kwezinga lokushisa eliphansi, aqinisekisa ukuhlinzekwa kwamafutha okuzinzile ezindaweni zokushisa eziphansi futhi kunciphisa ukwehluleka kokuqala-ukuyeka kweyunithi. Aphinde abe nokuzinza okuphezulu kwamakhemikhali anokuncipha kokubeka ukhwele, okuhamba kancane ukuguga kwezingxenye. Kodwa-ke, amandla ayo okuthwala umthwalo wefilimu lamafutha angaphansi kwamafutha emaminerali, okuholela ekusebenzeni okuvalayo okubuthakathaka kancane. Ngaphezu kwalokho, anomdlandla omkhulu wokuthatha amanzi; ukungena kwamanzi kungadala kalula ukuvinjelwa komoya oqandayo ohlelweni nokugqwala kwezingxenye. Amafutha e-PAG synthetic anokubalwa okuphezulu kwe-viscosity kanye nokumelana okuhle nokushisa okuphezulu kwe-oxidation, okwenza afanele ama-compressor aphindayo asetshenziswa ezimweni zokusebenza ezishisayo kanye namayunithi we-heat pump. Amaphutha ayo afaka ukuhambisana okulinganiselwe nama-refrigerant athile kanye nentengo ephakeme kakhulu. Ukukhetha okungalungile kwamafutha okupholisa kuzokwenza ukugqwala komshini kube kubi kakhulu, kwandise ukudlidliza nomsindo, kunciphise ukusebenza kahle kokupholisa, futhi kunciphise kakhulu impilo yesevisi ye-compressor.