Mechanical

H A O’Neil is Irelands largest and most experienced Mechanical HVAC and Process Piping Contractor, serving the construction industry for over 125 years.

We provide the following services throughout Ireland, UK, Europe and the Middle East.:

  • HVAC Installation
  • Process Pipework Installation
  • Plant and Tool Hook-Ups
  • Process Plant Erection
  • High Pressure Steam
  • Water Treatment
  • Refrigeration
  • Ventilation
  • Medical Gases
  • Specialist Rigging
  • Commissioning of Building Services
  • Maintenance of Building Services
  • Design
  • High Corrosion Installation
  • Air Conditioning
  • Heating
  • Plumbing
  • Gas Installation

 



Latest News

We are holding walk-in interviews this December!

We will be holding walk-in interviews on Thursday 28th December 2017 for Mechanical and Electrical Contracting Professionals.

Dublin, Ireland Thursday 28th December 2017 11:00am – 1:00pm Herbert Park...

All Ireland Supreme Award at the NISO Safety Awards for Jones Engineering

The 26th Annual National Irish Safety Organisation / Northern Ireland Safety Group (NISO/NISG) Safety Awards took place on 13 October 2017 at a special...

Come and meet us! Meet the Buyer Event for the construction of the new children’s hospital

We would like to invite you to meet us at a Meet the Buyer Event for the construction of the new children’s hospital organised by...