What is a common characteristic of hydrofluorocarbons (HFCs)?

Hydrofluorocarbons (HFCs) are commonly recognized for their lower global warming potential compared to chlorofluorocarbons (CFCs). CFCs were widely used in refrigeration and air conditioning but were found to significantly deplete the ozone layer. In response to these environmental concerns, HFCs were developed as alternatives that do not carry the same ozone-depleting properties. Although HFCs still contribute to global warming, their overall impact is less severe than that of CFCs, making them a more suitable option during a transition towards more environmentally friendly refrigerants.

The other potential characteristics described do not pertain to HFCs in the same context. While HFCs can be flammable, they are generally less so compared to some other refrigerants. They do not deplete the ozone layer, which is a major reason for their adoption over CFCs. Lastly, while some hydrocarbons may be toxic, HFCs are usually considered less toxic compared to other chemical refrigerants. Thus, the characteristic of having a lower global warming potential compared to CFCs accurately describes HFCs.