Building Services Engineering Limited (BSE Ltd) was founded in 2005.

BSE Ltd specialise in Building Services Engineering, Building Facilities and Fire Safety Engineering. We Design, Supply, Installation, Service, Repair and Maintenance of a whole range of Heating, Ventilation, Air Conditioning & Refrigeration (HVAC) and Mechanical, Plumbing and Electrical equipment (MEP). Our Professional Engineers play an important role in Consultancy, Fire Safety Engineering and site surveys and MEP reports.

The NSAI auditors certify BSE Ltd protocols on an annual basis. We constantly update our engineers with product development training and education so that we remain experts in our field.

All BSE Engineers are highly trained, fully competent and operate within a strict professional code of conduct.


Denis O'Neill

BSE.ie Denis O'Neill Chartered Engineer

Denis O’Neill is a Chartered Engineer qualified with an Engineering degree from the University of Limerick (NIHE) in 1988, a Master’s degree in Building Services Engineering from Brunel University London and Fire Safety Practice (P.Grad.Dip.) from Trinity College Dublin.

Denis has worked in the building services industry for over 32 years specialising in heating, ventilation, air conditioning, refrigeration, and fire safety. He is an accredited data centre designer. He is a consultant engineer specialising in air conditioning design, HVAC inspection and design & build projects and fire safety engineering.

Denis O’Neill is a full member of Chartered Institute of building services engineers (CIBSE), Engineers Ireland (IEI) and ASHRAE (Ireland).

Contact Denis at info@bse.ie or 01 6016 434


BSE.ie Colin McCready Engineer Director

Colin McCready is a qualified Air Conditioning and Refrigeration Engineer with over 30 years’ experience within the commercial and industrial sectors.

Coilin holds a City & Guilds qualification in refrigerant handling, registered with F-Gas registration Ireland and holds a qualification in Thermal Imaging. He supervises all our commercial gas design,  installation, commissioning. He is a Registered Gas Installer (RGI).

Contact Colin at colin@bse.ie or 01 6016 434


BSE Ltd believes that continuous education and training is the only way to stay on top of a constantly changing industry. Buildings are becoming more energy efficient, safer to live and work in.  This only happens if the engineers involved are highly trained and can show competency.  

As new standards, products, technology and solutions are developed, we are constantly providing our engineers with up-to-date training so that they stay at the top of our profession.

Our Consultant Engineers are some of the most experienced, academically and hands-on engineers in Ireland.

Along with professional qualifications our consultant engineers have worked at all levels of involvement from design, equipment selection, site installation, commissioning of a whole range of HVAC engineering and fire safety projects.

Mission Statement

Our vision is that BUILDING SERVICES ENGINEERING Ltd  will become the leading provider of  HVAC and MEP services throughout Ireland. We are able to provide all our clients with a standard of services second to none.

Our mission is not only to meet – but also exceed – client expectations with professionally competent teamwork, continuously updating our engineers’ training and focused understanding of our customers’ needs.

As a progressive organisation, we will achieve this goal through technical excellence to ensure product dependability – and continued long-term customer satisfaction.

Health and Safety

BUILDING SERVICES ENGINEERING LTD is committed to the provision of a Safety, Health & Welfare and Environment and the continuous improvement of Occupational Safety, Health and Environmental matters for employees, customers and Visitors.

BUILDING SERVICES ENGINEERING Ltd commitment to ensure that as far as reasonably practicable will comply with the Safety, Health and Welfare at Work Act 2005. We provide a safe place of employment, a safe working environment, a written safety policy/risk assessment and look after the health and safety of others.


When Standards Count

 BUILDING SERVICES ENGINEERING LTD is accredited by the National Standards Authority of Ireland (NSAI) and is audited annually to ensure we maintain our high standards. Our commitment to quality and accountability is a commitment and accountability to you the client.


  • I.S EN ISO 9001:2015 Quality Management System
  • IS EN ISO 14001:2015 Environmental management system
  • OHSAS 18001: 2007 Occupational Health and Safety