Hayes Mechanical & Engineering delivers a comprehensive mechanical systems engineering service — covering everything from HVAC and building services through to high-purity process pipework and fully integrated BMS installations. We work with main contractors, project managers, and end clients across data centres, pharmaceutical facilities, healthcare, and commercial construction to design, fabricate, install, and commission the full range of mechanical systems your building or facility requires.

Our mechanical engineering capability is backed by purpose-built workshop facilities in Co. Mayo — a 16,000 sq ft carbon steel workshop and a fully segregated 7,000 sq ft stainless steel facility — giving us a unique ability to pre-fabricate complex pipework assemblies and plant room packages off-site, reducing programme risk and improving quality on delivery.

We are experienced in the full range of building services and process systems, including CHW and LPHW pipework, HVAC systems, process stainless steel (304/316 dairy tube), drainage, plumbing, and package plant rooms. Our teams are supported by BMS integration expertise and a strong commissioning capability. From early-stage design and coordination through to testing, balancing, and handover documentation — Hayes Mechanical & Engineering is your single point of accountability for mechanical services delivery.