R1234yf
CertiFlow is a record system for refrigerants, and works with a GWP of 4 for R1234yf — the value fixed on every booking.
Tetrafluorpropeen
The numbers
GWP (AR4, 100-year)
4
Family
HFO
Single compound
Safety class
A2L
Formula: CF3CF=CH2
Status
Permitted
May be used for new equipment and servicing, within the applicable quota.
From kilograms to obligation
What a given charge means for the CO₂ equivalent and for the check interval.
| Charge | CO₂ equivalent | Leak check |
|---|---|---|
| 0.9 kg | 0.004 t | This charge stays below the 1 kg threshold. No periodic leak check is required. |
| 1 kg | 0.004 t | At least every 12 months |
| 5 kg | 0.02 t | At least every 12 months |
| 10 kg | 0.04 t | At least every 6 months |
| 25 kg | 0.1 t | At least every 6 months |
| 100 kg | 0.4 t | At least every 3 months |
Last checked: 2026-08-09 · F-gas regulation
Alternatives
We do not maintain an alternatives list for this refrigerant.
In CertiFlow
When you book a charge with this refrigerant, the CO₂ equivalent is calculated using the GWP above and fixed at that moment. A later change to the table does not alter your history.
Start with your three most awkward customers
You do not have to migrate everything to find out whether this works. Put three installations in, have an engineer book a charge, and download the export. 30 days, no credit card, no automatic renewal.