R-744

carbon dioxide

Approved

GWP: 1
ODP: 0
Class: A1
Family: natural
Boiling: -78.4 °C

Composition: carbon dioxide, CO₂

Operates at very high pressure (up to 120 bar) and transcritically in warmer ambient conditions. Non-flammable and non-toxic, but requires equipment designed for the high pressure.

What this means for you

This refrigerant is approved for use and is not subject to a shrinking quota. It is a safer long-term choice when buying new equipment.

Transcritical systems. The dominant technology for new supermarkets in Europe.

Handling

Class A1. Low toxicity, non-flammable. The widest application, without special restrictions.

Used as a replacement for

R-404A

HFC blend

GWP 3,922

Transcritical systems, supermarkets

Where to go next

What the law requires Find a licensed technician

Data source: Manual §1.3.2, §2.5.1, §2.5.2