O’Connors is committed to ensuring excellence and quality in everything we do to create systems for you that are productive, effective, and most of all efficient.

We are an engineering based mechanical construction and services company. We value delivery and bring a whole of life perspective towards the systems performance and energy optimisation in your facility.

We are a cohesive team compromising highly skilled professional and trades people with extensive experience working to deliver and maintain exceptional outcomes in our industry.

Established in 1999, O'Connors is an industry leading South Australian, private family owned, mechanical services provider.


Engineers +


Innovation + 


Featured case studies

Adelaide Convention Centre


Adelaide Health and Medical Sciences Building


182 Victoria Square


Latest News

O'Connors - Top 100 South Australian Companies

The list is a demonstration of the top performing companies for the year and celebration of the the state’s leaders and high achievers across sectors, and in a range of categories.

Telstra, Waymouth Street New Data Centre

O'Connors and Broadspectrum have worked closely with Telstra to design & construct cooling to new racks for a Telstra expansion.

O'Connors + BIM-MEP Construction Innovation Forum

BIM-MEP Australia is an offshoot of the AMCA developing national standards, processes and libraries of parts to use in BIM. O’Connors are actively involved in this initiative.

Adelaide Convention Centre - Stage 2 Completion

Our construction and commissioning team successfully completed stage 2; handover to the client was in July and the first events took place in August. The entire project (stage 1+2) is a testament to the whole O'Connors team.