Company lists · Data refreshed October 2026

Top 25 Building systems installation contractors based in Ireland

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

Compiled by the RevenueBase Data Team Data refreshed Oct 9, 2026 128 companies tracked

RevenueBase identified 128 company matches for building systems installation contractors associated with Ireland as of October 2026 and tracks 2,705 professional contacts across them, including 1,265 with verified work emails. Dublin is the largest hub.

This list covers company matches for building systems installation contractors associated with Ireland, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed October 9, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Oct 9, 2026 How this list was built

128Companies

2,705Contacts tracked

1,265Verified emails

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The 25 largest building systems installation contractors based in Ireland

Ranked by team size

Top 25 of 128 company matches for building systems installation contractors based in Ireland, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Oct 9, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Ardmac	Exact match	Swords, IrelandHQ recorded Oct 9, 2026	201-500	423 contacts →
	Exact match “We are an award winning international construction specialist that delivers complex high value workspaces and technical environments.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
2	Tritech Engineering	Exact match	Dublin 22, IrelandHQ recorded Oct 9, 2026	201-500	186 contacts →
	Exact match “Driving ESG Success Through Precision Engineering Investors today face increasing pressure to achieve higher building performance standards, meet strict sustainability targets…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
3	Rockwell	Exact match	Cork, IrelandHQ recorded Oct 9, 2026	201-500	126 contacts →
	Exact match “Trusted delivery partner for design, installation and commissioning of HVAC, utility pipework, E&I, and decarbonisation solutions across all industries.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
4	Gaffney Mechanical	Exact match	Dublin, IrelandHQ recorded Oct 9, 2026	51-200	97 contacts →
	Exact match “ENGINEERING EXPERTISE THAT DELIVERS INTELLIGENCE, EXCELLENCE & INNOVATION TO EVERY PROJECT.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
5	Quinn Downes Group	Exact match	Dublin 12, IrelandHQ recorded Oct 9, 2026	51-200	87 contacts →
	Exact match “Quinn Downes Mechanical Services Ltd was founded in by our Directors Pat Quinn and Derek Downes.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
6	Mastertech Group	Exact match	Tallaght, IrelandHQ recorded Oct 9, 2026	51-200	84 contacts →
	Exact match “Mastertech Group is a leading provider of integrated building services, engineering solutions, and sustainable maintenance support across Ireland.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
7	Burlington Engineering	Exact match	Dublin, IrelandHQ recorded Oct 9, 2026	51-200	69 contacts →
	Exact match “Burlington Engineering Limited is a building services engineering provider with a long established reputation as one of the leading companies operating in its field.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
8	Metec Consulting Engineers	Exact match	Bray, IrelandHQ recorded Oct 9, 2026	51-200	61 contacts →
	Exact match “Reshaping the way you think about building performance since 2007.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
9	DMG Engineering LTD	Exact match	Dublin, IrelandHQ recorded Oct 9, 2026	201-500	60 contacts →
	Exact match “DMG Engineering Ltd have been in operation since 2004.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
10	Dominic O'connor LTD	Exact match	Loughrea, IrelandHQ recorded Oct 9, 2026	51-200	55 contacts →
	Exact match “Dominic O'Connor Ltd are a progressive mechanical building services contractor based in the Loughrea, Co.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
11	Lynskey Engineering LTD	Exact match	Dublin 10, IrelandHQ recorded Oct 9, 2026	51-200	48 contacts →
	Exact match “Lynskey Engineering Limited provide a wide scope of Mechanical Building Services covering commercial, industrial, process and mixed use developments.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
12	TIM Kelly Group	Exact match	Ballybrit, IrelandHQ recorded Oct 9, 2026	201-500	46 contacts →
	Exact match “Tim Kelly Group, founded in 1974, is one of Ireland’s leading mechanical and electrical contractors offering mechanical, electrical, fire protection and technology solutions.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
13	Alpha Mechanical Services LTD	Exact match	Clonshaugh, IrelandHQ recorded Oct 9, 2026	51-200	44 contacts →
	Exact match “Alpha Mechanical Services is mechanical contractor based in Ireland, specialising in complete mechanical installation services for commercial and retail mechanical systems.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
14	T Bourke	Exact match	Dublin, IrelandHQ recorded Oct 9, 2026	51-200	44 contacts →
	Exact match “Ireland’s leading mechanical and electrical contractor, T BOURKE.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
15	Jcps Mechanical LTD	Exact match	Dublin, IrelandHQ recorded Oct 9, 2026	51-200	36 contacts →
	Exact match “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…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
16	Kerrigan Mechanical LTD	Exact match	Athboy, IrelandHQ recorded Oct 9, 2026	51-200	35 contacts →
	Exact match “Midland Heating and Plumbing Ltd.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
17	Sygma Automation	Exact match	Mallow Road, IrelandHQ recorded Oct 9, 2026	11-50	32 contacts →
	Exact match “Senior engineers located in the following areas: Cork - Dublin - Belfast - Galway - Mayo - Donegal - Roscommon - Longford - Kerry - Laois - Limerick Sygma Automation specialises…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
18	Kelly RAC	Exact match	Ennis, IrelandHQ recorded Oct 9, 2026	51-200	29 contacts →
	Exact match “Kelly Refrigeration and Air Conditioning is one of Ireland’s leading refrigeration, air conditioning and HVAC service providers, supporting commercial and industrial clients…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
19	M&p Mechanical	Exact match	Dublin, IrelandHQ recorded Oct 9, 2026	51-200	29 contacts →
	Exact match “M&P Mechanical is a trusted, family-founded mechanical contracting company delivering high-quality, safe, and sustainable solutions across Ireland and beyond.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
20	CTS Group IRE	Exact match	Co Waterford, IrelandHQ recorded Oct 9, 2026	11-50	28 contacts →
	Exact match “CTS Group is the first choice for those seeking electrical, mechanical and technology contracting services.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
21	Harmon Group	Exact match	Dublin, IrelandHQ recorded Oct 9, 2026	51-200	21 contacts →
	Exact match “The roots of the Harmon Group are in the air-conditioning industry but over the years our business has grown to include electrical & mechanical divisions.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
22	Walsh Group	Exact match	Ballinrobe, IrelandHQ recorded Oct 9, 2026	51-200	20 contacts →
	Exact match “Walsh Group is a Building Services Engineering Contractor offering a comprehensive range of installation services.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
23	Trane Ireland	Exact match	Dublin, IrelandHQ recorded Oct 9, 2026	n/a	18 contacts →
	Exact match “Make Trane Ireland your go-to commercial HVAC partner – for rental and sales of heating, ventilation and air conditioning systems.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
24	Asms Mechanical Services LTD	Exact match	Cork, IrelandHQ recorded Oct 9, 2026	11-50	18 contacts →
	Exact match “ASMS – Architectural Steel & Mechanical Services was established in 2006, it is an Irish owned Company based in the South of the Country, We operate on a national scale from small…” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase
25	Efficient Climate Control	Exact match	Dublin 11, IrelandHQ recorded Oct 9, 2026	11-50	17 contacts →
	Exact match “Efficient Climate Control provides HVAC and mechanical services across commercial and industrial environments.” Recorded in the RevenueBase company graph · Oct 9, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “building systems installation contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 128 building systems installation contractors based in Ireland

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Building systems installation contractors based in Ireland at a glance

As of Oct 9, 2026

46.8%Verified-email coverage

21.1Average contacts per company

11-50Median size (employees)

24.2%Largest-city concentration · Dublin

Oct 9, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

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 128 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Ireland whose business descriptions match “building systems installation contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,265 professional contacts with verified work emails across the full matched dataset. 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 October 9, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Building systems installation contractors by metro

Building systems installation contractors in Dublin31

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “building systems installation contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many building systems installation contractors are there based in Ireland?

RevenueBase identified 128 company matches for building systems installation contractors associated with Ireland as of October 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Ardmac tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most building systems installation contractors?

Dublin leads with 31 company records, followed by Limerick (3) and Ashbourne (2).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,265 professional contacts with verified work emails tracked across these 128 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on October 9, 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 SmartSearch, 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.