Refrigerant ndi njira yogwirira ntchito yozungulira mufiriji mu kompresa mpweya woziziritsa madzi ozizira. Refrigerant imatenga kutentha panthawi ya vaporization mu evaporator ndiyeno imatulutsa kutentha panthawi ya condensation mu condenser. Njira ziwirizi zimapita mmbuyo ndi mtsogolo zimapangitsa chiller kukhala mufiriji. Pali mitundu iwiri ya mafiriji m'mafakitale -- firiji yogwirizana ndi chilengedwe kuphatikiza R134A, R410A ndi R407C komanso mafiriji omwe si ochezeka ndi chilengedwe kuphatikiza R22.
Mu malonda mayiko, mayiko ena angafunike kompresa mpweya utakhazikika madzi chiller kuperekedwa ndi chilengedwe wochezeka refrigerant pofuna kuteteza chilengedwe. Pa S&A Teyu kompresa mpweya woziziritsa kuzizira madzi, onse amalipidwa ndi mafiriji ogwirizana ndi chilengedwe.
Pankhani yopanga, S&A Teyu adayika zida zopangira yuan yopitilira miliyoni imodzi, kuwonetsetsa kuti njira zingapo zimachokera kuzinthu zazikuluzikulu (condenser) za mafakitale oziziritsa kukhosi mpaka kuwotcherera kwachitsulo; ponena za mayendedwe, S&A Teyu yakhazikitsa malo osungiramo katundu m'mizinda ikuluikulu ya China, atachepetsa kwambiri kuwonongeka chifukwa cha mayendedwe akutali a katunduyo, komanso kuwongolera magwiridwe antchito; pankhani ya pambuyo-malonda utumiki, nthawi chitsimikizo ndi zaka ziwiri.
