Replacement of older refrigeration and freezing systems at NMBU

Conversion of an older cold room and freezer room from R404A to CO2. Complete replacement of water connections, gas piping, evaporators and electrical control systems. This reduces both energy use and future service costs, while eliminating the need for F gas reporting. By decommissioning these two systems and sending the refrigerant for destruction, NMBU removes potential future emissions equivalent to 15,700 tonnes of CO2 equivalents.

From R404A to a CO2-based refrigerant

Fluorinated gases such as the refrigerant R404A have a high global warming potential and are being gradually phased out through stricter regulations, particularly in freezer rooms and refrigeration systems. Many older freezer rooms still operate with R404A, but this results in both a significant climate impact and increasing costs related to servicing and regulatory fees. Transitioning to modern CO2 solutions provides substantially lower emissions, improved energy efficiency and alignment with future environmental requirements.