As refrigerant regulations continue to evolve, contractors and store operators are weighing equipment options that can meet both current and future requirements. One option gaining attention is CO₂ (R-744) refrigeration, particularly for walk-in coolers and other small-format applications.

CO₂ has been used as a refrigerant for more than a century, but advances in materials, electronic controls and system design have made modern CO₂ equipment more practical. As adoption grows, component availability is improving and costs are beginning to come down.

The technology still comes with considerations, including higher operating pressures, different charging and handling procedures, and performance challenges in high ambient temperatures. However, manufacturers are increasingly developing CO₂ systems specifically for smaller applications, making the technology one to watch as the industry navigates the next generation of refrigerant options. Click here to read more.