Why Us

Our Mission

To take ownership of the full mechanical package from design, supply, fit to handover: exceeding expectations of clients and consultants by going the extra mile for each other and for our projects.

We remain loyal to our team, clients and to the consultant teams with whom we work.

The success and development of McGuinness Mechanical Engineering is due to authenticity, transparent communication where misunderstandings are owned, and collaborative solutions agreed.

McGuinness Mechanical Engineering value people, we know the importance of relationships, how they thrive in a culture of respect, openness, trust, and empathy.

Our Commitment

Health and Safety

McGuinness Mechanical Engineering pride themselves on HSEQ excellence, we work in a fast-paced environment, yet we ensure that safety is paramount on site to our clients, employees, and other operatives. McGuinness Mechanical Engineering regard Health and Safety as a priority.

McGuinness Mechanical Engineering operate a robust Health and Safety management system accredited to ISO 45001 standards.


McGuinness Mechanical Engineering are ISO 14001 accredited and are fully committed to sustainability and strive to be more sustainable. We have introduced several company initiatives to deliver and encourage a reduction in our environmental impact.

  • Introduction of Electrics vehicles to our fleet
  • Car/Van sharing
  • Paperless Office
  • Recycling on site and office
  • Energy Management in our offices via lighting control sensors


Quality is regarded as a core value within McGuinness Mechanical Engineering Ltd. Quality workmanship has been ingrained in each employees’ minds at every stage of our service from design, material supply to handover.

In 2018 McGuinness Mechanical Engineering Ltd became ISO 9001:2015 accredited. Prior to our accreditation we had invested significant time into our Integrated Management System. We have a dedicated Quality Control Team that maintain a consistent presence throughout each project we undertake. They ensure benchmarks of quality works for each project undertaken for all project team members are adhered to.

The Quality Control team are ultimately responsible for quality of workmanship, however they are also responsible for ensuring all operatives have the correct training on all materials used on site, as well as issuing organising and completing testing and commissioning.

Corporate Social Responsibility

We are committed to our duties as an employer, to the construction industry, our local communities, and the environment. We strive to play our part in a better society.

At McGuinness Mechanical Engineering Ltd we believe in giving back to our community, we provide ongoing company support to several local sports organisations. These include, Armagh Ladies, Castlewellan GAA, Carrickcruppen GAA, Whitecross GAA and various underage GAA clubs.

We encourage a healthy work-life balance for all our people. Our culture is one of inclusion, diversity, and equality.

We are committed to working with our clients, construction partners and supply chain in an ethical and sustainable manner. We aim to work in partnership and build long term, mutually beneficial professional relationships.

Our Accreditations