Past President

Frank Caul


Frank Caul is Co-Founder at OPNBuildings and despite insisting to whomever will listen that he is fully retired, he continues to be instrumental in guiding the technological development of the Building Performance Monitoring software. He has over forty years experience in the heating ventilation and air conditioning business, and began his career as a Refrigeration Apprentice and spent many years in the Commissioning Department of HA O’Neill’s then Joining Temperature Control Services as Commissioning / service engineer before departing to Saudi Arabia as an HVAC Engineer. On his return to Ireland in the mid-eighties opportunities for employment were thin on the ground so Frank started his own company, which went on to become Sirus Group employing more than 100 people across Ireland. Sirus was acquired by the international building controls company Sauter AG in 2018.

On a sunny evening with a gentle breeze in the air he will most likely be found sailing the high seas of Cork Harbour.

Dr Simeon Oxizidis


PhD / Meng Mechanical Engineering Senior Innovation Manager at IES Ltd Simeon has 25 years of scientific research experience in Greece, the Netherlands, Ireland and UK exploring multiple research topics in the scientific domain of energy performance of buildings. He has participated in more than 30 research projects and authored or co-authored more than 45 peer-reviewed papers. In his current role in IES, he is involved in the conceptualisation, scoping, development and submission of grant proposals to fund the implementation of collaborative research projects. He is a member of ASHRAE and IBPSA.

On a sunny evening with a gentle breeze in the air he will most likely be found sailing the high seas of Cork Harbour.

Donal Finn


Donal Finn was ASHRAE Ireland Chapter President for the period 2018/2019 and a member of ASHRAE since 1998. He is a mechanical engineer by profession and is currently is a lecturer at the School of Mechanical and Materials Engineering, University College  Dublin.

Michael Dawkins


Michael Geraghty


Daniel Coakley


Conor Murray


Gary O’Sullivan


Gary is a Building Services Engineer with over 18 years project management and design experience in the biotech, pharmaceutical, industrial and commercial sectors. He is the Managing Director of OSENG Engineering Consultancy based in the West of Ireland. OSENG specialise in design, project management, cost management, commissioning and validation of Life Science projects. Gary has been a member of ASHRAE since 2013 and an active Board member since 2020. His focus is on the growth of ASHRAE within Irelands Medtech, Biopharma, Pharma, Semi-Conductor and Datacentre industry over the coming years.


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