Banned F gas for refilling equipment

Fluorinated gases (F gases) that you must not use to refill equipment.

You must not use virgin (unused) F gases to refill existing refrigeration systems when both of the following apply:

  • the refrigeration system contains F gas equivalent to 40 tonnes or more of carbon dioxide
  • the F gas has a global warming potential above 2,500

Find out how to calculate the weight of an F gas in carbon dioxide equivalent

Mass of common F gases banned from 2020 for refilling equipment

F gas Global warming potential Mass of F gas banned from use to refill equipment (kg)
HFC 508B 13,396 3
HFC 507A 3,985 10
HFC 404A 3,922 10.2
HFC 434A 3,245 12.3
HFC 422D 2,729 14.7

HFC 404A is the gas most affected by the ban. It’s used in:

  • industrial refrigeration systems
  • medium and large commercial refrigeration systems, such as central pack systems in supermarkets
  • large transport refrigeration systems, such as on trains or ships

When the refill ban applies

If you need to add refrigerant to a system affected by the refill ban after 2020, you can:

  • use an F gas with a global warming potential of more than 2,500 that has been reclaimed (until 2030 only)
  • use an F gas with a global warming potential of more than 2,500 that has been recovered from similar equipment by your business or the business which serviced your equipment (until 2030 only)
  • remove all of the F gas from the system and replace it with an F gas with the lowest possible global warming potential, for example HFC 448A or HFC 449A (known as ‘retrofilling’) - follow the manufacturer’s recommendation
  • replace the refrigeration system with new equipment that uses a refrigerant with a lower global warming potential
Published 21 August 2019