Design, Supply, Installation, Service, Repair & Hire of Air Compressors and Compressed Air Systems Including Nitrogen Gas Generators. Design Air (Scotland) Ltd was launched in 2003 to work in partnership with Atlas Copco. We supply very high quality and extremely efficient compressed air products, and provide a service support network within the compressed air and gas industry. Design Air support a wide range of industries within Glasgow and Scotland from our main depot in Airdrie.