Copy of Ireland's Top 20 Mechanical and Electrical Contractors 2026

	Company	Reporting Period	Overall Turnover 2025	Overall Turnover 2024 (Previous year)	Turnover Ireland 2025	International Turnover 2025
1	Mercury Engineering	Dec-25	€1,956,000,000	€1,811,000,000	€191,000,000	€1,765,000,000
2	Jones Engineering	Dec-25	€1,603,000,000	€1,283,000,000	€589,000,000	€1,014,000,000
3	Dornan Engineering Ltd	Dec-25	€1,214,000,000	€734,000,000	€95,000,000	€1,119,000,000
4	Kirby Group Engineering	Dec-25	€933,000,000	€750,000,000	€397,000,000	€536,000,000
5	Suir Engineering Ltd	Dec-25	€421,350,000	€401,000,000	€251,780,000	€169,570,000
6	STS Group (Specialist Technical Services)	Dec-25	€357,500,000	€298,450,000	€125,188,000	€232,312,000
7	Designer Group	Mar-26	€275,000,000	€310,000,000	€170,000,000	€105,000,000
8	King & Moffatt Building Services	Jun-25	€194,000,000	€167,000,000	€62,000,000	€132,000,000
9	Leo Lynch	Dec-25	€110,300,000	€84,700,000	€64,200,000	€46,100,000
10	CJK	Dec-25	€97,548,000	€70,000,000	€96,920,000	€628,000
11	Radley Engineering Ltd	July-24	€94,425,992	€100,853,757	€94,425,992	–
12	MSL Engineering Ltd	Dec-25	€93,000,000	€115,000,000	€50,000,000	€43,000,000
13	Tritech Engineering	Aug-25	€71,500,000	€50,500,000	€71,500,000	–
14	Lynskey Engineering Ltd	Dec-25	€70,067,589	€57,900,000	€31,450,976	€38,616,613
15	BMD & Company Ltd	Dec-25	€57,300,000	€103,800,000	€56,850,000	€450,000
16	Dominic O’Connor Ltd	Dec-25	€46,791,945	€43,163,553	€46,791,945	–
17	Weltec Engineering	Dec-25	€43,600,000	€41,700,000	€43,600,000	–
18	Rockwell Engineering	Dec-25	€43,000,000	€31,100,000	€42,000,000	€1,000,000
19	AirconMech	Dec-25	€40,348,000	€50,100,000	€39,148,000	€1,200,000
20	Quinn Downes Group	Dec-25	€39,200,000	€35,500,000	€39,200,000	–

Ireland's Top 20 Mechanical and Electrical Contractors 2026 by Irish Construction News