HFOs

Hydrofluoroolefins (HFOs) sune mahaɗan halitta marasa cikawa waɗanda suka ƙunshi hydrogen, fluorine da carbon. Ba kamar hydrofluorocarbons na gargajiya (HFCs) da chlorofluorocarbons (CFCs) ba, waɗanda suka cika, HFOs sune olefins, wanda aka sani da alkenes. Ana haɓaka HFOs a matsayin masu sanyaya "ƙarni na huɗu" waɗanda ke da ƙarancin ƙarfin dumama duniya wanda shine 0.1% na HFCs. Kayayyakin HFO suna da ɗan gajeren rayuwar yanayi kuma an rarraba su a matsayin sifili ODP (Potential Depletion Potential) da ƙarancin GWP (Potential Dumaming Potential), suna ba da madadin da ya fi dacewa da muhalli ga CFCs, HCFCs da HFCs.
Kumfa mai ƙarfi da aka samar ta amfani da HFOs a matsayin abin hura iska ana amfani da shi sosai a sassan motoci da gine-gine a cikin nau'in kumfa mai sassauƙa da tsauri yana haifar da ci gaban kasuwar HFO.