Which HC refrigerant can be used in new domestic small appliances?

C. R-600a, also known as isobutane, is a hydrocarbon refrigerant that is commonly used in small refrigeration systems, particularly in new domestic small appliances. It has gained popularity due to its environmentally friendly properties, including a low Global Warming Potential (GWP) and zero ozone-depleting potential.

The use of R-600a in small appliances aligns with the increasing regulations and standards aiming to phase out refrigerants that harm the environment. Additionally, its efficiency and compatibility with existing refrigeration technology make it an ideal choice for manufacturers producing energy-efficient household appliances.

Other refrigerants in the list, such as R-404A and R-410A, are primarily used in commercial and larger scale refrigeration and air conditioning systems and do not meet the specific requirements for small domestic appliances. R-717, or ammonia, is suitable for industrial applications but is not safe for use in small appliances due to its toxicity and high pressure needs. Thus, R-600a stands out as the appropriate choice for new domestic small appliances.