Ozone depleting refrigerant gases
We use refrigerant gases in our air conditioning. We have increased the use of these gases by 15 per cent during 2004/05 due to the roll-out of new communications networks. However, we have made a clear shift away from ozone-depleting HCFC gases to HFC gases that have no ozone-depleting potential, although they are still greenhouse gases. As part of our refrigerant replacement programme we have reduced HCFC gases from 68 per cent of the total to 26 per cent. We are also considering the feasibility of refrigerant-free air conditioning, such as forced-air systems.