O'SULLIVAN DARCY ENGINEERING LIMITED

O'Sullivan Darcy Engineering Limited is a specialist engineering firm based in Ballycasheen, Killarney, Co. Kerry. The company focuses on high-quality welding services and the fabrication of flashings, delivering robust solutions for a range of construction and industrial projects.

In addition to its core welding expertise, O'Sullivan Darcy supplies a comprehensive portfolio of ductwork components, including spiral ductwork fittings and square ductwork formwork. The business also provides heat-recovery systems and air handling solutions, supporting clients who require efficient heating and ventilation infrastructure. By combining precision engineering with a reliable supply chain, the company helps contractors and developers achieve energy-efficient, durable installations.

With a clear emphasis on craftsmanship and technical reliability, O'Sullivan Darcy Engineering serves clients across the construction and engineering sectors, offering a one-stop source for welding, flashings, heating supply and specialised ductwork products. Their approachable, professional service makes them a valued partner for projects throughout the region.