Contribution of HFCs to the greenhouse effect
HFCs are potent greenhouse gases because they absorb infrared radiation and because they have relatively long atmospheric lifetimes.
Alternatives are available for many applications that previously used CFCs or HCFCs or still use HFCs. For example, iso-butane is used in refrigerators for households in Europe for many years now; a hydrocarbon that does not affect the ozone layer and has no greenhouse effect. Other hydrocarbons, as well as ammonia and CO2, are used as refrigerant in cooling systems as well.