R449A Opteon™ XP40

R-449A (Opteon™ XP40)

Lower GWP (1397) A1 safety class alternative to R-404A, R-507A, R-407A, R-407F for all direct expansion refrigeration applications.

Features and Benefits

  • A1 (non-flammable) safety class – Ideal retrofit candidate for higher GWP refrigerants.
  • 64% lower GWP than R-404A –More sustainable and compliant with F-Gas legislation.
  • Good energy performance compared to R-404A – Lower indirect emissions and operating costs.
  • Approved by many equipment manufacturers – Large choice of equipment available.

Packaging and Supply

  • Climalife supply R-449A in 10kg, 19kg or 53kg returnable cylinders.
  • Conforms to AHRI 700-2016 specifications.

Why Choose Climalife?

Climalife are a key player in the distribution of refrigerants and other climate control products, with a nationwide distribution network and product knowledge that is second to none.

How does R-449A compare to R-404A?

R-449A has a similar cooling capacity with improved energy efficiency compared to R‑404A. In many cases the compressor discharge temperature will not be a concern but for some low temperature applications, under the same operating conditions, R‑449A will exhibit a significantly higher compressor discharge temperature than R‑404A which, in a retrofit situation, may need to be managed.

Full theoretical performance comparisons at customer specified conditions are available from Climalife on request.




HFC-32/HFC-125/R-1234yf/HFC-134a - 24.3/24.7/25.3/25.7% by mass

Chemical Formula



Molecular Mass


Boiling Point (at 1 Atmosphere)


Dew Point (at 1 Atmosphere)


Saturated Liquid Density at 25°C

1097.1 kg/m³

Saturated Vapour Density at 1.013bar

4.758 kg/m³

Saturated Liquid Pressure at 25°C

12.685 bar

Saturated Liquid Pressure at 50°C

23.407 bar

Critical Temperature


Critical Pressure

44.997 bar

Critical Density

479.4 kg/m³

Critical Volume

0.00209 m³/kg

Latent Heat of vapourisation at 1.013bar

238.7 kJ/kg

Thermal Conductivity of Liquid at 25°C

80.0 mW/(m.K)

Thermal Conductivity of Vapour at 25°C & 1.013bar

13.6 mW/(m.K)

Surface tension at 25°C

5.86 mN/m

Viscosity of Liquid at 25°C

0.139 mPa.s

Viscosity of Vapour at 25°C & 1.013bar

0.012 mPa.s

Specific heat of liquid at 25°C

1.550 kJ/(kg.K)

Specific heat of vapour at 25°C and 1.013bar

0.8506 kJ/(kg.K)

Cp/Cv ratio at 25° and 1.013 bar


Lower Fammability Limit (LFL) in air (EN 378)


Flash Point


ISO 817 / ASHRAE 34 Safety Classification


PED Fluid Group


Ozone Depletion Potential (ODP)


Global Warming Potential (GWP) IPCC AR4/IPCC AR5


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