H.F.O. (Hydro Fluoro Olefin)
The refrigerants HFO (Hydro -Fluoro – Olefins ) are a family of refrigerants derived from propane. Are compounds, such as HFCs, from hydrogen, fluorine and carbon. By virtue of their chemical structure are substances that appear to be unstable when released into the atmosphere and therefore decompose rapidly. Unlike HFCs, therefore, they do not accumulate in the atmosphere and cause a very low greenhouse.
As it does not contain chlorine not even cause atmospheric ozone damage. For these reasons are considered environmentally friendly refrigerants.