How is CO2 compared to freon?

Freon 

CO2 

-12 °C​ 

-3 °C​ 

Chilled solution, glycol pumps and bigger piping​ needed 

DX Ultra-Low Superheat solution​ 

Water consumption​ 

No water consumption​ 

Limited heat-recovery potential​ 

High heat-recovery potential​ 

Leakage control​ 

CO2 detection​ 

Uncertain service life​ 

Future proof (F-gas Regulation)​ 

1.0–1.5 kg/kW​ 

1.2–1.5 kg/kW​ 

Regulatory costs (F-gas)​ 

No regulatory costs​ 

High refrigerant cost​ 

Low refrigerant cost​