Longer motor life. Coachair offers motors that are fully serviceable with a design life between overhaul of 5 years
Product flexibility allowing the HVAC system to be customised to meet the operators exact needs.
Exclusive service networks trained to meet not only the HVAC requirements but also the special needs of the environment.
Coachair Bus & Coach Air Conditioning Systems are ISO 9001 approved.
Market leader in microprocessor controls for the passenger transport industry.
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Sigma Air Conditioning | Transport and Heavy Duty HVAC Systems
SIGMA Pty Limited is a world leader for over 30 years in the design, manufacture, supply and service of specialised air conditioning equipment suitable for the transportation (rail and bus), mining, industrial and defence industries, where high ambient temperatures, severe vibration, dense particulate and corrosive environments prevail.
SIGMA's heritage and experience stems from the amalgamation of three companies COACHAIR, SIGMA, and THERM*AIR, all with extensive experience in the above application areas. SIGMA have developed a comprehensive range of air conditioning and filtration equipment now manufactured for the transportation, industrial, mining and defence markets on a global basis.
The innovative and unique SIGMA designed equipment has attracted worldwide interest and acceptance and many enquiries have been received from major industries throughout the world.