About Quinn Downes

The company was originally formed in 1999 and traded under the name Quinn Downes Limited. It soon became synonymous with high quality mechanical installations as it’s dedicated team of expert professionals maintained an honest, hard working approach to business. Quinn Downes Limited operated in the field of installation, commissioning and aftercare service of mechanical, process and HVAC systems.

Through the dedication of our staff and their consistent delivery of exceptional projects, the company has grown. Our client portfolio is testament to this and includes both domestic and international corporations, government departments and globally recognized institutions. All of our clients trust our expertise, appreciate our loyalty and rely on our meticulous attention to detail.


Over the last number of years, there has been an increase in the demand for a dedicated service and maintenance solution for our clients. In January 2015, the Quinn Downes Group was formed which incorporates two separate companies, Quinn Downes Installation and Quinn Downes Service & Maintenance.

We are proud to be a successful group that now employs over 100 members of staff.  To find out more about how Quinn Downes can support your business, please contact any of our team.

Company Profile

Please click on the link below to download our Company Profile outlining the services we offer and some examples of the fantastic projects we have worked on recently.

QDG Company Profile 2021


Our Core Values

Attention to Detail


Expert Know-how


Trusted Reliability


Honest Professionalism


Meet the Directors

  • Derek Downes
    Derek Downes
  • Alan Morrin
    Alan Morrin
  • David Dempsey
    David Dempsey
Derek Downes
    Managing Director

    Derek is Managing Director for the Quinn Downes Group responsible for business development, finance, health & safety and procurement.  He has over 30 years experience in the industry and has been a Director responsible for the delivery of projects in practically every mechanical engineering sector from healthcare, education, hotel & leisure, data center, office, retail and public sector building’s. He is a  founder Director of Quinn Downes Mechanical Services Ltd in 1999 (now Quinn Downes Installation), Quinn Downes Service and Maintenance in January 2015 and Medimec Ltd in January 2017.


    Major Projects

    Beaumont Hospital, Terenure College, Our Lady of Lourdes Hospital Drogheda, Hewlett Packard, Deloitte’s, Department of Trade & Enterprise. 


    Alan Morrin
      Financial Director

      Alan is a building services engineer with an engineering degree from DIT Bolton Street.  He graduated from Bolton Street in 2003. Over the years he has gathered a wealth of experience both national and international across a diversified project portfolio. He has been involved in some of the companies major projects and is able to lead all project sizes from coordination to commissioning.  Alan is also involved in the estimation and procurement for projects where his practical experience allows the company to offer competitive tender quotes.  In 2018 Alan became Financial Director and continues to ensure that the Quinn Downes Group offer their clients the very best service possible.

      Major Projects

      Backweston Agricultural Laboratories, Eircom Offices, Imperial College London, Ovagen Pharmaceutical, Psychiatric Units -Beaumont & OLOL Hospitals.


      David Dempsey
        Operations Director

        David started his career in the HVAC industry in 1996 when he commenced a Plumbing Apprenticeship from which he qualified in 2000. In 2001, he commenced work with Quinn Downes Ltd acting as a Tradesman and progressed to a Foreman’s role looking after various projects in the Health, Commercial, Hospitality and Educational Sectors. In 2007, David became a Contracts Manager and in 2018 became the Operations Director for Quinn Downes Installation. David is responsible for the overall delivery of each project on time, within budget and to a high standard of installation.

        Major Projects

        HEALTHCARE: Intervention Suite, Connolly Hospital / St James Hospital A&E Upgrade / Beaumont Hospital; MRI / TMAU / St Damien’s Ward / H&I Lab / Acute Psychiatric Unit / Mortuary / CSSD Autoclave – Mullingar Regional Hospital ED Upgrade / APU Beaumont Hospital / VHI Swiftcare.   EDUCATION:  DCU Stokes Building / Luttrelstown Post Primary Campus / Various Rapid Build Schools from 2011 – 2015 / Terenure College (various projects) / Trinity College (various projects) / UCD (various projects) / Loretto College, Stephens Green.   GOVERNMENT PROJECT:  Dublin Castle State Apartments / Royal Hospital Kilmainham / Clontarf Garda Station office fitouts; BNP Paribas / Wonga / Trip Advisor / Log Me In / SanDisk / 3 Georges Dock / ATOS.   HOSPITALITY: Burlington Hotel / Davenport Hotel / Alexander Hotel / Druids Glen / Powerscourt Distillery.   VOCATIONAL SECTOR BUILDINGS:  Carmelite Community – Moate Church / Gort Muire / Sacred Heart Church / Malahide  – St Joseph’s Convent Longford – Methodist Church, Dundrum / SVP.


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