ACR Journal

The RAC Engineer’s Guide to Low GWP Refrigerants 20 Where is Your Sector Going? The A-Gas view on the product trends that are reshaping our industry. R410A If your equipment contains 3kgs or more, R410A can still be used. If existing equipment is running ok, there is no need to change – continue to service this using virgin or reclaimed product*. R32 New installations under 3kgs are likely to be on R32. This A2L has a low enough GWP to come under the current 750 threshold. R466A Large systems above 3kgs are likely to move to A1, low GWP alternatives such as R466A (Solstice N41) from Honeywell. AIR CONDITIONING HEAT PUMPS Gas boiler installations are to be outlawed in new homes by 2025. This will see the rise of heat pumps using: R32 PROPANE R1234ZE TRANSPORT For larger systems, such as trains and ships, R404A can no longer be used. R452A is an alternative option that is not currently affected by the F-Gas Regulation. However, with a high GWP of 2141 this may not be a long term solution*.