The 2027 F-Gas transition · Lesson 3
Reading the gazetted GWP list
- The cap targets the gazetted GWP value, not the label name.
- GWP 150 is the limit for new centralised plant from 1 July 2027.
- Several “low-GWP” blends still exceed it.
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Answer all three to complete the knowledge check and earn the chapter badge.
No. The GWP 150 cap applies to new centralised commercial refrigeration from 1 July 2027. Plant already installed, or contracted before the date, is covered by the grace provisions and can stay on its current refrigerant.
Read it from the gazetted GWP Annex, not the cylinder label.
No. R448A has a gazetted GWP of about 1,387, far above the 150 cap, so it cannot be specified for new centralised commercial refrigeration from 1 July 2027.
| Refrigerant | Gazetted GWP | New plant from 2027 |
|---|---|---|
| R448A | ~1,387 | Not compliant |
| R744 (CO2) | 1 | Compliant |
For most Singapore cold-store duties the compliant route is transcritical CO2 (R744), the basis of the Muller CO2 range.
This lesson is about reading the gazetted GWP list. The cap turns on the refrigerant’s listed GWP, the threshold is 150, and blends must be resolved against the Annex rather than the product name.
Ask about your specific refrigerant or plant and I will answer from the compliance material for this lesson.