Under the European F-gas regulations issued in 2014, HFC consumption will be reduced by 80% over the period 2016–2030
Refrigerants R290 (propane) and R600a (isobutane) are possible alternatives to other refrigerants with high GWP in small hermetic systems, like factory-made commercial refrigerators and freezers.
They have also been in use in refrigeration plants in the past, and are still used in some industrial plants. R290, in particular, is considered a promising alternative refrigerant with good energy efficiency for many applications while being the best option in terms of direct GWP reduction.
The main drawbacks of HC are their potential flammability and other safety risks.
However, such drawbacks may be disregarded for a minimal refrigerant charge, while safety precautions are considered and installed in large volume refrigeration equipment.