Daikin Creard R407H equation low cost low GWP

Creard R-407H
A low GWP and Low Cost service solution for R-404A/507 in MT and LT applications

The European F-Gas regulation EU517/2014 is upon us. Effective since 2015, the regulation is entering a new phase of accelerated phasedown of the HFC consumption within the EU28. Compared to the baseline year of 2015, a reduction step of 37% of available quota is set for January 2018. Even in 2017, the requirement that imported pre-charged equipment consumes quota will add pressure on available quota. Owners and operators of existing installations need to find urgently cost effective solutions to maintain their equipment and cooling service.

Who is at risk?

Industry studies have shown that the largest burden on the F-gas industry to reduce its CO2 footprint will be carried by the commercial refrigeration sector. Especially impacted are systems running on high GWP refrigerants such as R-404A / R-507. According to EPEE's Gapometer study, 50% of existing R-404A systems should be replaced or converted to a lower GWP refrigerant by January 2018 to meet this requirement.

This raises a huge challenge for our industry. Indeed, the race to retrofit these high GWP gases in commercial systems puts even more short-term pressure on quota availability. This fact, combined with further step-downs in F-gas quota means that the right choice of refrigerant is critical for initial retrofit and future service.

Choosing a Low GWP and Low Cost retrofit refrigerant - a 3-component choice

Cost Component 1: Lower the GWP

The F-gas cap and phasedown schedule for CO2 equivalent quota will inevitably put increasing pricing pressure on each tonne of CO2 required by the EU market. It is therefore essential that plant owners and operators get to the lowest GWP levels for an A1 refrigerant in their commercial refrigeration installations. Any refrigerant with a GWP greater than 1500 will see rapidly increasing cost pressure and may even require a second retrofit to lower GWPs in order to meet the cap and phasedown schedule.

Creard R-407H is an A1 classified refrigerant with a GWP <1500

Cost Component 2: The molecules

R-407H is a mixture of R32 / R125 / R134a. It has been specially developed to enable a low-cost conversion of R-404A and R-507 systems without the need for expensive HFO components.
We at DAIKIN believe that the EU refrigeration industry will need HFO based solutions to comply with the F-gas regulation. Indeed, DAIKIN has a broad portfolio of HFO technologies. However, it is a fact that HFO molecules are more expensive to produce than traditional HFCs. We believe that the industry should only pay for HFOs or even more expensive solutions when absolutely necessary. For the replacement of most R-404A / R-507 MT and LT systems, Creard R407H provides equivalent performance to HFO-based technologies with a GWP also below 1500.

Cost Component 3: Ease of retrofit & performance

In most cases, Creard R-407H can be used without major changes to existing R-404A / R-507 systems. R-407H can be considered a "drop in" solution for many systems 2. Studies have shown that R-407H has an improved COP vs other HFO/HFC based replacement refrigerants and better cooling capacity than R-404A.

We believe that multiple solutions will be necessary to meet the F-gas Regulation.
HFO based technologies will be a part of those solutions and DAIKIN's portfolio reflects these technologies.
However, for many A1 refrigeration applications where replacement of R-404A / R-507 is the greatest challenge for users and contractors, Creard R-407H can meet their F-gas needs by offering:

Lower GWP <1500
Performance equivalent or higher than R-404A/R-507
Lower cost no need for more expensive HFO based blends
Ease of Retrofit a drop in solution for many systems

Physical data 3

    R-404A R-507 Creard R-407H
Chemical Formula   CHF2CF3
Molar Mass kg/kmol 97.6 98.86 113.07
Boiling Point at 1.013 bar °C -46.2 -46.74 -44.7
Critical Temperature °C 72.0 70.6 86.5
Critical Pressure bar 37.29 37.1 48.5
liq. cp4 kJ/(kgK) 1.542 1.539 1.585
vap. cp4 kJ/(kgK) 1.221 1.225 1.176
Ratio cp/cv, vap. 4   1.37 1.38 1.36
Spec. density, liq. 4 kg/m³ 1044 1048 1111
Spec. density, vap. 4 kg/m³ 65.27 68.89 41.86
Enthalpy of vaporization 4 kJ/kg 140.26 136.45 199.02
Explosive limit in air 5 % v/v N/A N/A N/A

2 However, R-407H cannot be considered a "drop-in" for every system. For example, due to R-407H's higher discharge temperature compared to R-404A / R-507, measures such as liquid injection would need to be considered for discharge temperatures exceeding 80°C.
3 Thermo-physical data calculated by Refprop 9.0
4 sat. @ 25°C
5 T = 25°C, p= 1.013bar

Case studies


Compressor approvals

The compressor manufacturers listed here can be contacted for approval of Creard R-407H for use with their compressors:.


Further information:

Creard R-407H Product Information brochure:

Creard R-407H Handling brochure: