Let our numbers do the talking

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    1.4+ Million

    Technical assets
    under management

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Nationwide Network

With a nationwide footprint of 19 branches, our clients are supported by a workforce of over 800 employees which include specialist engineers, technicians, project managers, estimators, site personnel, and service specialists.


Our Purpose & Values.

To enrich people’s lives by transforming
the built environment

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    We are relentless about ensuring everyone returns home safe and well every day.

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    Our data enables us to be curious, proactive and deliver the best outcomes.

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    We encourage everyone to find their own ideal balance between work and life.

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    Diverse backgrounds, thinking and skills, working together, make us a force to be reckoned with.


Our Corporate Social Responsibility

We believe in making a difference and are committed to working and acting in a socially responsible manner towards each other and all those with whom we interact.


We strive to behave ethically at all times, to contribute to economic development while improving the quality of life of our employees and their families as well as our local community and society at large.

Indigenous Inclusion

We are committed to include the Indigenous community with our business activities.

  • tranby logo

    We are proud corporate partners of Tranby National Indigenous Adult Education and Training (Tranby). Tranby, is Australia’s longest running Aboriginal-controlled nationally registered training organisation (RTO), offering units of competency, full VET qualifications, and non-accredited skill development initiatives to Indigenous adults from across Australia. Tranby seeks to EDUCATE, ACHIEVE and EMPOWER their students and for over 60 years, they have seen graduates return to their communities empowered with newfound skills.

    Find out more about Tranby
  • supply nation logo

    Grosvenor are members of Supply Nation. Supply Nation works to connect over 1900 verified Indigenous businesses, along with procurement teams from government and the corporate community to help shape the Indigenous business sector. Supplier diversity is a growing movement in Australia and Grosvenor are committed to creating a more inclusive economy.

  • Indigenous Employment

    We offer an inclusive work environment and encourage Indigenous people to apply for positions within our organisation. Send your CV or apply for vacant positions advertised.

I am blessed to be a part of such an AMAZING company. Thank you Grosvenor / KL Air for giving me the chance to be a part of this wonderful team.

Melanie Doring is a full-time employee of Grosvenor Engineering Group,
working as a receptionist at
the KL Air office in Tamworth.

Our Commitment to Quality

We have robust systems in place to deliver on the promise. We keep up to date with industries best practice to ensure we are giving you quality outcomes. Our Quality, Safety & Environment Systems, are certified to stringent JAS-ANZ standards.

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Industry Recognition

  • Tanner Higgins

    Winner of RMIT 2019 Trades Award for
    Most outstanding 3rd Year
    refrigeration Student

    Tanner Higgins

  • Joshua Brown

    Winner of the Gold Coast TAFE Award for
    Apprentice of the Year 2019

    Joshua Brown

  • Jason Glendenning

    Winner of the 2017 Tradie of the
    Year Award

    Jason Glendenning

Our Executives

  • Grosvenor Engineering Group Nicholas Lianos Managing Director

    Nicholas Lianos

    CEO & Managing Director

  • Grosvenor Engineering Group Peter Souflias Director

    Peter Souflias


  • Grosvenor Engineering Group Steve Gallagher Director

    Steven Gallagher


  • Grosvenor Engineering Group Alex

    Alex Petrakis


  • Grosvenor Engineering Group Graham Hindley General Manager

    Graham Hindley

    Chief Operating Officer

Our Beginnings

Grosvenor Engineering Group Beginnings
Grosvenor Engineering Group began with three university friends who had studied engineering at the University of New South Wales, two of which are still Owners / Directors today – Nicholas Lianos and Peter Souflias.

Nicholas came across Grosvenor Air Conditioning, a company looking to sell its HVAC maintenance contracts and with his university friends they bought the contracts. In May 1994, the Grosvenor Group of companies began with a team of 13. Today we are a national company with customers spanning across Australia.

Watch our 25 year anniversary video

Watch video
  • 1994

    Purchased Grosvenor Air Conditioning & opened offices in Kent Street Sydney
  • 2000

    Head Office moves to Kingsgrove
  • 2008

    Expansion into Newcastle/Coffs Harbour with Nationwide Air Conditioning acquisition
  • 2009

    Wollongong Office opens
  • 2010

    North West NSW (Tamworth) expansion with
    KL Air Acquisition
  • 2011

    Melbourne & Canberra Offices open
  • 2012

    Brisbane office opens and acquisition of
    Computer Air Services
  • 2013

    Sydney CBD office opens
  • 2014

    Fire Service line introduced, SA and WA offices open
  • 2015

    Expansion into Tasmania through acquisition of Harding’s HVAC & Refrigeration
  • 2016

    QLD expansion with acquisition of Air-Rite (Nambour), Head Office moves to Moorebank and introduction of Electrical Service Line
  • 2019

    Grosvenor celebrates its 25th birthday
    Acquisition of Dickson’s Refrigeration in Victoria