Company lists · Data refreshed September 2026

Top 25 Hvac engineering staffing companies based in Ireland

Name: Hvac engineering staffing companies based in Ireland
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 125 companies tracked

RevenueBase identified 125 hvac engineering staffing companies headquartered in Ireland as of September 2026 and tracks 2,464 professional contacts across them, including 871 with verified work emails. Dublin is the largest hub.

This list covers hvac engineering staffing companies 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 28, 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 28, 2026 86% judged on-target in blind review

125Companies

2,464Contacts tracked

871Verified emails

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The 25 largest hvac engineering staffing companies based in Ireland

Ranked by team size

Top 25 of 125 hvac engineering staffing companies based in Ireland, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to hvac engineering staffing companies: 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	Servisource	Indirect evidence	Dundalk, IrelandHQ checked Sep 28, 2026	51-200	299 contacts →
	Indirect evidence “Servisource are here for our clients and candidates right when you need us.” Source: RevenueBase Database · checked Sep 28, 2026
2	Sigmar Recruitment	Indirect evidence	Dublin, IrelandHQ checked Sep 28, 2026	51-200	202 contacts →
	Indirect evidence “Sigmar Recruitment established in 2002, is a leading Irish recruitment services company comprised of 14 specialist divisions covering the entire recruitment process and managed…” Source: RevenueBase Database · checked Sep 28, 2026
3	Gaffney Mechanical	Partial evidence	Dublin, IrelandHQ checked Sep 28, 2026	51-200	93 contacts →
	Partial evidence “ENGINEERING EXPERTISE THAT DELIVERS INTELLIGENCE, EXCELLENCE & INNOVATION TO EVERY PROJECT.” Source: RevenueBase Database · checked Sep 28, 2026
4	AA Euro Group	Indirect evidence	Waterford, IrelandHQ checked Sep 28, 2026	11-50	89 contacts →
	Indirect evidence “AA Euro Group are a specialist recruitment consultancy operating in a number of key locations across Europe in all sectors of industry, providing short and long-term labour hire…” Source: RevenueBase Database · checked Sep 28, 2026
5	Osborne	Indirect evidence	Dublin 2, IrelandHQ checked Sep 28, 2026	51-200	88 contacts →
	Indirect evidence “Osborne is a Leading, International, Irish Owned, multi Award-Winning Recruitment Consultancy with a reputation for Recruitment Excellence.” Source: RevenueBase Database · checked Sep 28, 2026
6	Oradeo	Indirect evidence	Dublin 24, IrelandHQ checked Sep 28, 2026	201-500	82 contacts →
	Indirect evidence “Oradeo provides high quality expert recruitment services to our clients throughout Ireland, Europe and Internationally.” Source: RevenueBase Database · checked Sep 28, 2026
7	BSS Building Staff Solutions	Indirect evidence	Dublin 8, IrelandHQ checked Sep 28, 2026	51-200	78 contacts →
	Indirect evidence “The Right People For The Job Established in 2005, Building Staff Solutions (BSS) is one of Ireland’s leading outsourced solutions provider and recruitment specialists.” Source: RevenueBase Database · checked Sep 28, 2026
8	Europlan Group	Partial evidence	Dublin, IrelandHQ checked Sep 28, 2026	51-200	77 contacts →
	Partial evidence “For over four decades, the Europlan Group has been a trusted partner, delivering exceptional services to the Engineering and Industrial sectors worldwide.” Source: RevenueBase Database · checked Sep 28, 2026
9	Prochem Engineering	Partial evidence	Kilkenny, IrelandHQ checked Sep 28, 2026	51-200	75 contacts →
	Partial evidence “Prochem Engineering is one of the leading engineering consultancy firms in Ireland, having been established in 1995.” Source: RevenueBase Database · checked Sep 28, 2026
10	Tandem Project Management LTD	Partial evidence	Blackrock, IrelandHQ checked Sep 28, 2026	51-200	65 contacts →
	Partial evidence “Tandem is an engineering consultancy specialising in project management, multi-disciplined engineering design, construction management, energy & carbon reduction, EHS and talent…” Source: RevenueBase Database · checked Sep 28, 2026
11	Burlington Engineering	Partial evidence	Dublin, IrelandHQ checked Sep 28, 2026	51-200	64 contacts →
	Partial 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 28, 2026
12	DMG Engineering LTD	Partial evidence	Dublin, IrelandHQ checked Sep 28, 2026	201-500	62 contacts →
	Partial evidence “DMG Engineering Ltd have been in operation since 2004.” Source: RevenueBase Database · checked Sep 28, 2026
13	Manpowergroup Ireland	Indirect evidence	Dublin, IrelandHQ checked Sep 28, 2026	51-200	56 contacts →
	Indirect evidence “We're part of ManpowerGroup – the world's workforce expert!@ManpowerIreland ManpowerGroup has been the world’s workforce recruitment and career development expert.” Source: RevenueBase Database · checked Sep 28, 2026
14	Danann AIR Limited	Indirect evidence	Balbriggan, IrelandHQ checked Sep 28, 2026	51-200	39 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 28, 2026
15	Matrix Recruitment Group	Indirect evidence	Waterford, IrelandHQ checked Sep 28, 2026	11-50	38 contacts →
	Indirect evidence “Matrix Recruitment Group is a leading regional recruitment company.” Source: RevenueBase Database · checked Sep 28, 2026
16	PJ Personnel	Indirect evidence	Tuam, IrelandHQ checked Sep 28, 2026	11-50	36 contacts →
	Indirect evidence “PJ Personnel are specialists in recruiting temporary and permanent staff for the Construction, Industrial, Manufacturing and Commercial Sectors.” Source: RevenueBase Database · checked Sep 28, 2026
17	Sherlock Recruitment	Indirect evidence	Dublin 12, IrelandHQ checked Sep 28, 2026	11-50	36 contacts →
	Indirect evidence “Reliable, Flexible, Fast & Focused.” Source: RevenueBase Database · checked Sep 28, 2026
18	Spectrum Engineering	Strong evidence	Dublin, IrelandHQ checked Sep 28, 2026	51-200	35 contacts →
	Strong evidence “Spectrum Engineering Limited was founded in 1982, and was set up to fill a gap in the Irish market for an independent HVAC Commissioning specialist firm.” Source: RevenueBase Database · checked Sep 28, 2026
19	Headcount Solutions	Partial evidence	Balbriggan, IrelandHQ checked Sep 28, 2026	51-200	34 contacts →
	Partial evidence “Headcount Engineering is a multi-disciplined Engineering Resourcing company that provides high quality technical personnel and technical productivity solutions to the…” Source: RevenueBase Database · checked Sep 28, 2026
20	Kelly RAC	Partial evidence	Ennis, IrelandHQ checked Sep 28, 2026	51-200	30 contacts →
	Partial evidence “Kelly Refrigeration and Air Conditioning is one of Ireland’s leading refrigeration, air conditioning and HVAC service providers, supporting commercial and industrial clients…” Source: RevenueBase Database · checked Sep 28, 2026
21	Connect Recruitment	Indirect evidence	Longford, IrelandHQ checked Sep 28, 2026	11-50	29 contacts →
	Indirect evidence “Connecting Talent.” Source: RevenueBase Database · checked Sep 28, 2026
22	O'neill & Brennan Ireland	Indirect evidence	Dublin, IrelandHQ checked Sep 28, 2026	51-200	28 contacts →
	Indirect evidence “Established in 1997, O’Neill & Brennan Ireland is a trusted recruitment partner to many of Ireland’s leading construction contractors.” Source: RevenueBase Database · checked Sep 28, 2026
23	Controlled Environment Solutions	Indirect evidence	Cork, IrelandHQ checked Sep 28, 2026	51-200	27 contacts →
	Indirect evidence “Controlled Environment Solutions (CES) Ltd is a growing Irish based company who provide professional Facilities Management & Project Services to organisations wishing to develop…” Source: RevenueBase Database · checked Sep 28, 2026
24	Orange Recruitment	Indirect evidence	Dublin 2, IrelandHQ checked Sep 28, 2026	1-10	25 contacts →
	Indirect evidence “Orange Recruitment is a recognised brand which has been associated with recruitment excellence in Ireland for more than 13 years.” Source: RevenueBase Database · checked Sep 28, 2026
25	DRS	Indirect evidence	Leixlip, IrelandHQ checked Sep 28, 2026	1-10	24 contacts →
	Indirect evidence “DRS provides Technical Recruitment and Building Information Model management and design services for the AEC industry.” Source: RevenueBase Database · checked Sep 28, 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: hvac engineering staffing companies. 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 hvac engineering staffing companies.
Partial evidence: Its own public description names part of hvac engineering staffing companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hvac engineering staffing companies. 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 125 hvac engineering staffing companies based in Ireland

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Hvac engineering staffing companies based in Ireland at a glance

As of Sep 28, 2026

35.3%Verified-email coverage

19.7Average contacts per company

11-50Median size (employees)

29.6%Largest-city concentration · Dublin

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

1,001-5,000

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 125 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 hvac engineering staffing companies, 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 “hvac engineering staffing companies”. 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 hvac engineering staffing companies), 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 hvac engineering staffing companies, 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, 871 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 28, 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.

Hvac engineering staffing companies by metro

Hvac engineering staffing companies in Dublin37

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 hvac engineering staffing companies, 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 hvac engineering staffing companies are there based in Ireland?

RevenueBase identified 125 hvac engineering staffing companies 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?

Servisource, headquartered in Dundalk, tops this list with the largest team on record.

Which city has the most hvac engineering staffing companies?

Dublin leads with 37 headquartered companies, followed by Cork (8) and Ashbourne (3).

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 871 verified decision-maker contacts tracked across these 125 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 28, 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.