Which gas is released by refrigerator?

Refrigerators typically use a refrigerant gas, such as hydrofluorocarbons (HFCs) or chlorofluorocarbons (CFCs), to facilitate the cooling process. These gases undergo a cycle of compression and expansion within the refrigerator system, absorbing heat from the interior and releasing it outside. While older refrigerants like CFCs have been phased out due to their harmful effects on the ozone layer, modern refrigerants are designed to be more environmentally friendly.