As high-GWP refrigerants are phased down, retrofitting existing systems to lower-GWP alternatives is often more cost-effective than full replacement. Done properly, it keeps equipment compliant and running for years.
Plan the retrofit
Identify the current refrigerant and a suitable replacement (for example R404A to R448A/R449A, or R22 to an appropriate HFC blend). Check the manufacturer’s retrofit guidance for the equipment and the new refrigerant.
The general process
- Recover the existing refrigerant fully
- Change the oil if required (often to POE) and fit a new filter drier
- Check and replace seals/components as needed for compatibility
- Pressure test and evacuate the system
- Charge the new refrigerant as a liquid (for blends), to the correct weight
- Adjust the expansion device and controls, then verify superheat/subcooling
After the retrofit
Update the equipment label and your F-Gas records to show the new refrigerant, and confirm performance against targets.
FAQ
Is retrofitting cheaper than replacing? Often yes, especially for systems with years of life left — but very old or inefficient systems may be better replaced.
Browse retrofit refrigerants like R448A and R449A in our online shop.