GREEN MATTERS
return and potentially damage compressors. Because every application is diff erent, assumptions should be avoided. This is where expert technical guidance can make all the diff erence.
Safety and compliance The introduction of low-fl ammable refrigerants brings a new level of responsibility. Although A2L refrigerants have low fl ammability and require signifi cant energy to ignite (typically over 1,000 times more than A3 refrigerants), installers must follow established safety practices. For ignition to occur, a large leak must happen in an enclosed
space, reaching a concentration of around 300g/m³, and be exposed to an ignition source. While this is highly unlikely in typical installations, engineers must still assess risk based on charge size, room volume, ventilation, and equipment location, all of which are detailed in the EN378 standard. Below are some comparative values of A2L refrigerants:
Refrigerant GWP R455A R454C R454A R32
148 148 258 675
Glide 10K 6K 5K 0K
LFL (kg/m³) 0.431 0.293 0.278 0.300
Understanding these properties can help engineers make safer, more informed decisions. A2Ls can be applied up to 11kg
with standard safety measures and up to 54kg with enhanced protection, such as leak detection and ventilation – again, as outlined in EN 378-1:2016, Table C2, Annexe C. It’s also vital to ensure systems use Group 1 gas-rated components, with appropriate tooling and procedures. Expert support is essential. What’s clear from these ongoing changes is that product
knowledge alone is no longer enough. As the complexity of refrigerant selection grows – balancing GWP, fl ammability, performance, system design, and compliance – it becomes increasingly important to work with suppliers who off er more than just inventory. This is where trusted technical partnerships play a pivotal
role. At Climate teams of specialists supports installers and
contractors in navigating technical specifi cations, complying with the latest standards, and selecting solutions that work in the real world.
The F-gas phase-down is more than a policy; it’s a
transformation of how cooling systems are specifi ed, installed, and maintained. With changes now in eff ect and more to come, collaboration, knowledge sharing, and expert guidance will be the key to keeping ahead.
By working with the right partners and staying informed,
the refrigeration and air conditioning industry can turn these regulatory challenges into a catalyst for development, effi ciency, and long-term sustainability.
One of the biggest technical shifts is the move toward refrigerants with signifi cant glide – a term that refers to the temperature range over which a zeotropic refrigerant blend
evaporates or condenses.
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www.acr-news.com • June 2025 19
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