- ODP (Ozone Depletion Potential) is a measure of how much a substance depletes the ozone layer compared to R-11, which has an ODP of 1.0 as the reference point.
- High ODP –
- R-11 → 1.0 (Reference)
- R-12 → 1.0
- Low ODP
- R-22 → 0.055
- R-123 → 0.02
- Zero ODP
- R-134a → 0.0
R-410A → 0.0
R-404A → 0.0
R-407C → 0.0 - R-1234yf → 0.0
R-1234ze → 0.0 - R-717 (Ammonia) → 0.0
R-744 (CO₂) → 0.0
R-290 (Propane) → 0.0
- R-134a → 0.0
