SIGMA Air Conditioning offers a complete range of customised air conditioning equipment, with a product to suit specific defence projects and application. SIGMA offer unique equipment to suit both static and mobile applications for specific purpose within the defence industry.

SIGMA defence equipment is manufactured in Australia to the highest of industry standards to suit the harshest of military conditions. Designed and engineered to comply with military specifications, SIGMA equipment will withstand extreme ambient temperatures, excessive shock & vibration and dust saturated atmospheres. SIGMA Air Conditioning equipment assists to resolve OH&S issues, by providing a dust and contaminant free, air conditioned space.

Sigma defence equipment is most suitable to air condition field medical, communication and maintenance shelters, including armoured personnel transport like Bushmaster, where absolute reliability is critical and performance cannot be compromised.


Defence Flyer
[PDF, 151 KB]
Defence Overview Brochure
[PDF, 803.5 KB]


SIGMA's D-SERIES comprises design, manufacturing and support of defence air conditioning equipment . Those AC units suit the harsh and demanding conditions in critical military applications and specifications where very high levels of shock, vibration and dust laden corrosive environments are experienced and the applications require a high cooling/heating capacity

SIGMA Knorr-Bremse Australia

23 - 29 Factory Street
Granville NSW 2142

Phone: 1300 643 643