R452A is an HFO/HFC blend designed as a lower-GWP replacement for R404A, with properties that make it particularly suited to transport refrigeration and low-temperature applications.
Key properties
- Type: A1 (non-flammable) blend
- GWP: around 2140 — roughly half of R404A’s ~3922
- Applications: transport refrigeration units, low-temperature commercial refrigeration
Why transport refrigeration likes it
R452A closely matches R404A’s pressures and behaviour, including performance at high ambient temperatures, making it a convenient choice for refrigerated trucks and trailers where similar operating characteristics matter.
Considerations
While R452A cuts GWP roughly in half versus R404A, it’s still higher than the HFO blends R448A/R449A (~1390). The right choice depends on the application and how far you want to future-proof against the phase-down.
FAQ
What is R452A used for? Primarily transport refrigeration and low-temperature commercial systems, as a closer-match replacement for R404A.
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