P.J. DUFFY AND SONS LIMITED

P.J. Duffy and Sons Limited is one of Ireland's most experienced mechanical services contractors, operating since 1967. Based in Dublin, the family-run firm delivers a full suite of mechanical solutions to commercial clients, with a strong portfolio of public-sector work for government departments, hospitals, schools, prisons, the Defence Forces, the Air Corps and An Garda Síochána.

The company's core specialisations include mechanical plant installations - from air-conditioning and ventilation systems to complex boiler and CHP units - as well as comprehensive repair, preventive maintenance and HVAC services. Their HVAC offering covers natural and smoke ventilation, air-handling units and bespoke ventilation designs, ensuring optimal indoor environments across a range of facilities.

P.J. Duffy and Sons has a proven track record on high-profile projects such as the new CHP installation for Becton Dickinson, a boiler cascade system at St Vincent's Hospital, and a cataract operating theatre suite at the Royal Victoria Eye and Ear Hospital. Their ongoing work spans residential apartments, civic offices and redevelopment schemes, underscoring a commitment to quality, reliability and client-focused service throughout Ireland.