Ireland’s Trusted Mechanical Engineering & Construction Specialists

Dominic O'Connor Limited is a leading provider of mechanical engineering and construction services in Ireland, recognised for innovative solutions, safety, and client satisfaction. Our dedicated team brings decades of industry experience to every project—from initial design to installation and ongoing maintenance—ensuring outstanding results every time. We are proud to be a trusted partner to hospitals, pharmaceutical plants, hotels, and commercial organisations nationwide.

We combine industry-leading certifications with experienced professionals and cutting-edge technology to deliver work that stands the test of time. From energy-efficient HVAC installations to zero-downtime maintenance, our commitment is to safety, reliability, and long-lasting value for every client. We focus on precise project planning and thorough execution, so you enjoy peace of mind and results you can count on.