As the industry moves beyond HFCs, natural refrigerants are playing an ever-bigger role. With very low global warming potential, they offer a long-term, future-proof solution — though each has its own handling considerations.
CO2 (R744)
Carbon dioxide has a GWP of just 1 and is non-flammable and non-toxic. It’s increasingly used in supermarket refrigeration and heat pumps. The main challenge is the high operating pressures, which require specialised equipment and training.
Ammonia (R717)
Ammonia has a GWP of 0 and is extremely efficient, making it a long-standing choice for large industrial refrigeration. However, it is toxic and mildly flammable, so it’s restricted to applications with proper engineering controls and trained operators.
Hydrocarbons (R290, R600a)
Propane (R290) and isobutane (R600a) have very low GWP and excellent efficiency. They are widely used in self-contained units, small heat pumps and domestic appliances. As A3 (higher flammability) refrigerants, they require strict charge limits and safe-handling procedures.
The bottom line
Natural refrigerants are central to a sustainable future for cooling. The right choice depends on the application, scale and the safety measures available.
Explore our refrigerant range in the online shop.