Abakhiqizi abahlukene, izinhlobo ezahlukene, kanye namamodeli ahlukene wezindawo zokupholisa amanzi ezimbonini zizoba nokusebenza okuhlukile okuhlukile kanye nesiqandisi. Ngaphezu kokukhethwa kwamandla okupholisa kanye nemingcele yepompo, ukusebenza kahle kokusebenza, izinga lokuhluleka, isevisi yangemuva kokuthengisa, ukonga amandla kanye nokuba nobungane bemvelo kubalulekile lapho kukhethwa i-chiller yamanzi yezimboni.