Welcome to Air Diffusion Agencies Air Diffusion Agencies is a renowned Australian manufacturer of state of the art accessories and technologies to provide you with a comprehensive range of components for your heating, ventilating, and/or air-conditioning (HVAC) system. We are the leading Australian supplier of quality air conditioning equipment and refrigeration components to the industry, and a holder of several patented products. We offer a complete range of products including air diffusers, flexible duct, fittings, ductboard, sheetmetal, zoning equipment, spare parts and units. We are a proudly 100% Australian family privately owned and managed company that is market driven by our valuable customers to design and provide innovative products that will meet your needs today, and in the future. We really are your one stop air conditioning trade centre, put us to the test today. Branches: 101 Frederick St Welland SA 5007 Ph: (08) 8116 3600 Fax: (08) 8116 3605 72-78 Willochra Rd Salisbury Plain SA 5109 Ph: (08) 8182 0777 Fax: (08) 8182 0705 101 Winnellie Rd Winnellie Darwin NT 0821 Ph: (08) 8984 6800 Fax: (08) 8984 6805 19 Roxburgh Ave Lonsdale SA 5160 Ph: (08) 8307 2300 Fax: (08) 8307 2305 7/29 McCotter St Acacia Ridge QLD 4110 Ph: (07) 3714 8900 Fax: (07) 3714 8905 All testing conducted by a Certified Laboratory in Australia.