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SIGMA Air Conditioning, a world leader for over 65 years in the design, manufacture, supply and service of specialised air conditioning equipment suitable for the transportation, mining, Industrial, defence and track maintenance industries where high ambient temperatures, severe vibration, dense particulate and corrosive environments prevail. SIGMA innovative, smart thinking and uniquely designed equipment has attracted worldwide interest and acceptance, and in many

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We want to make a positive contribution to sustainability and efficiency on mines, industry and defence– both for our customers and our environment. Every day. All over the world. Our mission is to engineer thermal management solutions in collaboration with our partners and deliver sustainable class-leading heating & cooling solutions. Sigma Air Conditioning is subsidiary of the Knorr-Bremse Group, based in Munich Germany, the world’s leading provider of system solutions fo

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1956: Founding 1956 Roger Dane & family founded Sigma Air Conditioning in Sydney specialising in Truck Cabin Air Conditioning 1980 to 1989 1982 SIGMA Air Conditioning Incorporated commenced in Chicago 1985 SIGMA Acquired Clima's Mining Business Expands to VIC & WA regions First Issue of SIGMA Signal Newsletter New Defence contract for the design & manaufacture of SIGMA DPW6-Series AC Units New Clima Model EB15 In Cab Hoodliner Unit 1986 New CS75 240VA

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Knorr-Bremse is the world’s leading manufacturer of braking systems for rail vehicles and trucks. Also we manufacture on-board systems such as doors, air conditioning and electronic management systems for rail vehicles. With design, marketing and servicing centres, the range is represented in 30 countries around the world including Australia, employing nearly 30,000 people globally and 450 people in Australia.

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SIGMA's innovative, smart thinking and uniquely designed equipment has attracted worldwide interest and acceptance, and in many cases is the industry benchmark. A leading global company, SIGMA have developed a comprehensive range of air conditioning, heating and filtration equipment now available across the globe in support of local markets. We recognise the changing demands in the world of Mining, with more focus given to innovations and smart thinking to achieve hig

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