Company lists · Data refreshed September 2026

Top 25 Mechanical contractors based in Ireland

Name: Mechanical contractors based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 142 companies tracked

RevenueBase identified 142 mechanical contractors headquartered in Ireland as of September 2026 and tracks 3,922 professional contacts across them, including 1,260 with verified work emails. Dublin is the largest hub.

This list covers mechanical contractors headquartered in Ireland, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 17, 2026 86% judged on-target in blind review

142Companies

3,922Contacts tracked

1,260Verified emails

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The 25 largest mechanical contractors based in Ireland

Ranked by team size

Top 25 of 142 mechanical contractors based in Ireland, ranked by team size, largest first. Data refreshed Sep 17, 2026. RevenueBase Smart Search rates how each company's information relates to mechanical contractors: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Dornan	Indirect evidence	Cork, IrelandHQ checked Sep 17, 2026	501-1,000	1,257 contacts →
	Indirect evidence “Dornan Engineering concentrates on a market where quality is appreciated.” Source: RevenueBase Database · checked Sep 17, 2026
2	King & Moffatt Building Services	Strong evidence	Carrick On Shannon, IrelandHQ checked Sep 17, 2026	501-1,000	339 contacts →
	Strong evidence “King & Moffatt Building Services are award-winning international Mechanical & Electrical Contractors with over 45 years experience, operating throughout Ireland, the United…” Source: RevenueBase Database · checked Sep 17, 2026
3	MSL Engineering LTD	Indirect evidence	Cork, IrelandHQ checked Sep 17, 2026	51-200	234 contacts →
	Indirect evidence “Celebrating 40 years in business in 2019, MSL Engineering Ltd.” Source: RevenueBase Database · checked Sep 17, 2026
4	CJK	Strong evidence	Dublin, IrelandHQ checked Sep 17, 2026	201-500	219 contacts →
	Strong evidence “CJK is one of the leading M&E contractors in Ireland, delivering mission critical mechanical and electrical solutions across high demand sectors.” Source: RevenueBase Database · checked Sep 17, 2026
5	BMD & CO LTD	Partial evidence	Cork, IrelandHQ checked Sep 17, 2026	201-500	185 contacts →
	Partial evidence “BMD is an Irish based Mechanical and Process Engineering Company, with its head office and manufacturing facilities in Cork, Ireland.” Source: RevenueBase Database · checked Sep 17, 2026
6	Gaffney Mechanical	Indirect evidence	Dublin, IrelandHQ checked Sep 17, 2026	51-200	93 contacts →
	Indirect evidence “ENGINEERING EXPERTISE THAT DELIVERS INTELLIGENCE, EXCELLENCE & INNOVATION TO EVERY PROJECT.” Source: RevenueBase Database · checked Sep 17, 2026
7	Airconmech	Strong evidence	Old Dublin Road, IrelandHQ checked Sep 17, 2026	51-200	89 contacts →
	Strong evidence “Trusted mechanical contractors for redefining environments, ensuring unparalleled comfort and efficiency with our comprehensive mechanical solutions and turnkey project delivery.” Source: RevenueBase Database · checked Sep 17, 2026
8	Quinn Downes Group	Partial evidence	Dublin 12, IrelandHQ checked Sep 17, 2026	51-200	85 contacts →
	Partial evidence “Quinn Downes Mechanical Services Ltd was founded in by our Directors Pat Quinn and Derek Downes.” Source: RevenueBase Database · checked Sep 17, 2026
9	Burlington Engineering	Indirect evidence	Dublin, IrelandHQ checked Sep 17, 2026	51-200	64 contacts →
	Indirect evidence “Burlington Engineering Limited is a building services engineering provider with a long established reputation as one of the leading companies operating in its field.” Source: RevenueBase Database · checked Sep 17, 2026
10	DMG Engineering LTD	Indirect evidence	Dublin, IrelandHQ checked Sep 17, 2026	201-500	62 contacts →
	Indirect evidence “DMG Engineering Ltd have been in operation since 2004.” Source: RevenueBase Database · checked Sep 17, 2026
11	Dominic O'connor LTD	Strong evidence	Loughrea, IrelandHQ checked Sep 17, 2026	51-200	55 contacts →
	Strong evidence “Dominic O'Connor Ltd are a progressive mechanical building services contractor based in the Loughrea, Co.” Source: RevenueBase Database · checked Sep 17, 2026
12	Lynskey Engineering LTD	Partial evidence	Dublin 10, IrelandHQ checked Sep 17, 2026	51-200	47 contacts →
	Partial evidence “Lynskey Engineering Limited provide a wide scope of Mechanical Building Services covering commercial, industrial, process and mixed use developments.” Source: RevenueBase Database · checked Sep 17, 2026
13	Cloncad Limited	Partial evidence	Kildare, IrelandHQ checked Sep 17, 2026	51-200	43 contacts →
	Partial evidence “Established in 2006, Cloncad is a 100% Irish owned contractor headquartered in Moyvalley, Kildare.” Source: RevenueBase Database · checked Sep 17, 2026
14	T Bourke	Strong evidence	Dublin, IrelandHQ checked Sep 17, 2026	51-200	42 contacts →
	Strong evidence “Ireland’s leading mechanical and electrical contractor, T BOURKE.” Source: RevenueBase Database · checked Sep 17, 2026
15	TIM Kelly Group	Strong evidence	Ballybrit, IrelandHQ checked Sep 17, 2026	201-500	41 contacts →
	Strong evidence “Tim Kelly Group, founded in 1974, is one of Ireland’s leading mechanical and electrical contractors offering mechanical, electrical, fire protection and technology solutions.” Source: RevenueBase Database · checked Sep 17, 2026
16	Hayes Mechanical & Engineering LTD	Strong evidence	Claremorris, IrelandHQ checked Sep 17, 2026	51-200	41 contacts →
	Strong evidence “Hayes Mechanical & Engineering Ltd is an established mechanical engineering and structural steel contractor operating across Ireland, the UK and Europe.” Source: RevenueBase Database · checked Sep 17, 2026
17	Jcps Mechanical LTD	Strong evidence	Dublin, IrelandHQ checked Sep 17, 2026	51-200	40 contacts →
	Strong evidence “JCPS Mechanical Ltd was established in 2007 by Managing Director John Corr and quickly expanded to become on of Ireland's leading Mechanical Contractors specialising in…” Source: RevenueBase Database · checked Sep 17, 2026
18	MCM Engineering Limited	Partial evidence	Carlow, IrelandHQ checked Sep 17, 2026	51-200	39 contacts →
	Partial evidence “MCM Engineering Ltd was set up in as a provider of Mechanical Process Piping Installations, specialising in high quality piping systems.” Source: RevenueBase Database · checked Sep 17, 2026
19	Kerrigan Mechanical LTD	Indirect evidence	Athboy, IrelandHQ checked Sep 17, 2026	51-200	37 contacts →
	Indirect evidence “Midland Heating and Plumbing Ltd.” Source: RevenueBase Database · checked Sep 17, 2026
20	KD Group Engineering Contractors	Partial evidence	Mayo Office, IrelandHQ checked Sep 17, 2026	51-200	33 contacts →
	Partial evidence “KD Group, Mechanical & Electrical Engineers, was established in 2003 by the joint directors David Staunton and Kieran Staunton.” Source: RevenueBase Database · checked Sep 17, 2026
21	Dunreidy Engineering LTD	Indirect evidence	Kilkenny, IrelandHQ checked Sep 17, 2026	51-200	32 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 17, 2026
22	Europiping Engineering LTD	Strong evidence	Kilrush, IrelandHQ checked Sep 17, 2026	51-200	28 contacts →
	Strong evidence “Mechanical Engineering Contractor.” Source: RevenueBase Database · checked Sep 17, 2026
23	M&p Mechanical	Partial evidence	Dublin, IrelandHQ checked Sep 17, 2026	51-200	27 contacts →
	Partial evidence “M&P Mechanical is a trusted, family-founded mechanical contracting company delivering high-quality, safe, and sustainable solutions across Ireland and beyond.” Source: RevenueBase Database · checked Sep 17, 2026
24	Mcguinness Mechanical Engineering	Partial evidence	Donabate, IrelandHQ checked Sep 17, 2026	51-200	27 contacts →
	Partial evidence “McGuinness Mechanical Engineering Ltd (MGME) is an owner managed family business & a leading provider of mechanical services & solutions across Ireland.” Source: RevenueBase Database · checked Sep 17, 2026
25	Flowtech Engineering LTD	Indirect evidence	Kildare, IrelandHQ checked Sep 17, 2026	11-50	22 contacts →
	Indirect evidence “Flowtech Engineering is a privately owned company that is able to assist with all HVAC requirements.” Source: RevenueBase Database · checked Sep 17, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: mechanical contractors. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names mechanical contractors.
Partial evidence: Its own public description names part of mechanical contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name mechanical contractors. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 142 mechanical contractors based in Ireland

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Mechanical contractors based in Ireland at a glance

As of Sep 17, 2026

32.1%Verified-email coverage

27.6Average contacts per company

11-50Median size (employees)

23.9%Largest-city concentration · Dublin

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

10001+

Email recency for this list is measured worldwide rather than for Ireland, so it is reported there. Company counts and contact totals on this page are exact for Ireland, over 142 companies.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among mechanical contractors, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
What qualifies: Companies headquartered in Ireland whose own description of what they do matches “mechanical contractors”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names mechanical contractors), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among mechanical contractors, and records with no verified work email. Companies headquartered outside Ireland are excluded even when they keep an office there.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 1,260 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 17, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Mechanical contractors by metro

Mechanical contractors in Dublin34

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names mechanical contractors, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many mechanical contractors are there based in Ireland?

RevenueBase identified 142 mechanical contractors headquartered in Ireland as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Dornan, headquartered in Little Island, tops this list with the largest team on record.

Which city has the most mechanical contractors?

Dublin leads with 34 headquartered companies, followed by Limerick (5) and Saggart (4).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 1,260 verified decision-maker contacts tracked across these 142 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 2026.

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About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.