R22 is an Ozone Depleting Substance (ODS) according to the EPA . R22 units are those air conditioning systems which use the refrigerant R22 to pump the heat from inside a building to outside and vice versa.  Ozone-Depleting Substances (ODS) are chemicals that can damage the earth’s ozone layer if they escape into the upper … Continue reading Why R22 units need replacing in Ireland’s Air Conditioning systems