Company lists · Data refreshed September 2026

Top 25 Energy efficient hvac contractors based in Ireland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 16, 2026 127 companies tracked

RevenueBase identified 127 energy efficient hvac contractors headquartered in Ireland as of September 2026 and tracks 1,814 professional contacts across them, including 842 with verified work emails. Dublin is the largest hub.

This list covers energy efficient hvac 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 16, 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 16, 2026 86% judged on-target in blind review

127Companies

1,814Contacts tracked

842Verified emails

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The 25 largest energy efficient hvac contractors based in Ireland

Ranked by team size

Top 25 of 127 energy efficient hvac contractors based in Ireland, ranked by team size, largest first. Data refreshed Sep 16, 2026. RevenueBase Smart Search rates how each company's information relates to energy efficient hvac 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	Rockwell	Partial evidence	Cork, IrelandHQ checked Sep 16, 2026	201-500	118 contacts →
	Partial evidence “Trusted delivery partner for design, installation and commissioning of HVAC, utility pipework, E&I, and decarbonisation solutions across all industries.” Source: RevenueBase Database · checked Sep 16, 2026
2	Crystal AIR LTD	Indirect evidence	Clane, IrelandHQ checked Sep 16, 2026	51-200	96 contacts →
	Indirect evidence “Crystal Air is a leading service supplier in the field of air conditioning with regard to installations, servicing and maintenance.” Source: RevenueBase Database · checked Sep 16, 2026
3	Gaffney Mechanical	Indirect evidence	Dublin, IrelandHQ checked Sep 16, 2026	51-200	93 contacts →
	Indirect evidence “ENGINEERING EXPERTISE THAT DELIVERS INTELLIGENCE, EXCELLENCE & INNOVATION TO EVERY PROJECT.” Source: RevenueBase Database · checked Sep 16, 2026
4	Airconmech	Strong evidence	Old Dublin Road, IrelandHQ checked Sep 16, 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 16, 2026
5	Quinn Downes Group	Indirect evidence	Dublin 12, IrelandHQ checked Sep 16, 2026	51-200	85 contacts →
	Indirect evidence “Quinn Downes Mechanical Services Ltd was founded in by our Directors Pat Quinn and Derek Downes.” Source: RevenueBase Database · checked Sep 16, 2026
6	Munters Corp Ireland LTD	Indirect evidence	Cork, IrelandHQ checked Sep 16, 2026	51-200	73 contacts →
	Indirect evidence “At Munters Corp Ireland (EDPAC) we offer a complete range of Air conditioning solutions and manufacture a full range of Datacentre cooling solutions, Close Control, Air Handling…” Source: RevenueBase Database · checked Sep 16, 2026
7	Burlington Engineering	Indirect evidence	Dublin, IrelandHQ checked Sep 16, 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 16, 2026
8	Dominic O'connor LTD	Partial evidence	Loughrea, IrelandHQ checked Sep 16, 2026	51-200	55 contacts →
	Partial evidence “Dominic O'Connor Ltd are a progressive mechanical building services contractor based in the Loughrea, Co.” Source: RevenueBase Database · checked Sep 16, 2026
9	Thermodial	Partial evidence	Magna Business Park, IrelandHQ checked Sep 16, 2026	51-200	48 contacts →
	Partial evidence “Thermodial are experts in planned preventative maintenance (PPM) of heating, ventilation and air conditioning (HVAC), BEMS, electrical and water services – since 1986.” Source: RevenueBase Database · checked Sep 16, 2026
10	Lynskey Engineering LTD	Indirect evidence	Dublin 10, IrelandHQ checked Sep 16, 2026	51-200	47 contacts →
	Indirect 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 16, 2026
11	Jcps Mechanical LTD	Partial evidence	Dublin, IrelandHQ checked Sep 16, 2026	51-200	40 contacts →
	Partial 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 16, 2026
12	Danann AIR Limited	Indirect evidence	Balbriggan, IrelandHQ checked Sep 16, 2026	51-200	39 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 16, 2026
13	Spectrum Engineering	Partial evidence	Dublin, IrelandHQ checked Sep 16, 2026	51-200	35 contacts →
	Partial 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 16, 2026
14	Crossflow LTD	Indirect evidence	Dublin 12, IrelandHQ checked Sep 16, 2026	51-200	34 contacts →
	Indirect evidence “With over 50 years of technical expertise Crossflow can install, commission, service and maintain all types of air conditioning equipment & Smoke Ventilation Systems.” Source: RevenueBase Database · checked Sep 16, 2026
15	Kelly RAC	Partial evidence	Ennis, IrelandHQ checked Sep 16, 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 16, 2026
16	M&p Mechanical	Indirect evidence	Dublin, IrelandHQ checked Sep 16, 2026	51-200	27 contacts →
	Indirect 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 16, 2026
17	Flowtech Engineering LTD	Partial evidence	Kildare, IrelandHQ checked Sep 16, 2026	11-50	22 contacts →
	Partial evidence “Flowtech Engineering is a privately owned company that is able to assist with all HVAC requirements.” Source: RevenueBase Database · checked Sep 16, 2026
18	Harmon Group	Indirect evidence	Dublin, IrelandHQ checked Sep 16, 2026	51-200	20 contacts →
	Indirect evidence “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.” Source: RevenueBase Database · checked Sep 16, 2026
19	Trane Ireland	Partial evidence	Dublin, IrelandHQ checked Sep 16, 2026	n/a	19 contacts →
	Partial evidence “Make Trane Ireland your go-to commercial HVAC partner – for rental and sales of heating, ventilation and air conditioning systems.” Source: RevenueBase Database · checked Sep 16, 2026
20	NGS Mechanical & Electrical Services	Indirect evidence	Dublin, IrelandHQ checked Sep 16, 2026	51-200	19 contacts →
	Indirect evidence “NGS Mechanical Services is a privately owned and run mechanical services company founded in 2013 by Noel Geraghty (formally of Noel Geraghty Heating and Plumbing).” Source: RevenueBase Database · checked Sep 16, 2026
21	Crosbie Group	Partial evidence	Dublin 12, IrelandHQ checked Sep 16, 2026	11-50	19 contacts →
	Partial evidence “Crosbie Group designs, delivers and maintains mission-critical refrigeration and HVAC systems for environments where failure is not an option.” Source: RevenueBase Database · checked Sep 16, 2026
22	Symphony Energy	Partial evidence	Wicklow, IrelandHQ checked Sep 16, 2026	11-50	17 contacts →
	Partial evidence “Symphony Energy is a global leader in optimising energy performance in the commercial built environment.” Source: RevenueBase Database · checked Sep 16, 2026
23	Citycool	Indirect evidence	Duleek, IrelandHQ checked Sep 16, 2026	11-50	17 contacts →
	Indirect evidence “Citycool are a family run business that specialise in the hire and sale of high quality portable air conditioning, heating, dehumidifier and humidifer units.” Source: RevenueBase Database · checked Sep 16, 2026
24	Coolrite	Indirect evidence	Bailieborough, IrelandHQ checked Sep 16, 2026	11-50	16 contacts →
	Indirect evidence “With over 40 years’ experience, award-winning Coolrite is the leading expert in premium quality Refrigeration and Air Conditioning.” Source: RevenueBase Database · checked Sep 16, 2026
25	Efficient Climate Control	Strong evidence	Dublin 11, IrelandHQ checked Sep 16, 2026	11-50	15 contacts →
	Strong evidence “Efficient Climate Control provides HVAC and mechanical services across commercial and industrial environments.” Source: RevenueBase Database · checked Sep 16, 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: energy efficient hvac 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 energy efficient hvac contractors.
Partial evidence: Its own public description names part of energy efficient hvac contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name energy efficient hvac 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 127 energy efficient hvac contractors based in Ireland

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Energy efficient hvac contractors based in Ireland at a glance

As of Sep 16, 2026

46.4%Verified-email coverage

14.3Average contacts per company

11-50Median size (employees)

22.0%Largest-city concentration · Dublin

Sep 16, 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 127 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 energy efficient hvac 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 “energy efficient hvac 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 energy efficient hvac 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 energy efficient hvac 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, 842 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 16, 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.

Energy efficient hvac contractors by metro

Energy efficient hvac contractors in Dublin28

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 energy efficient hvac 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 energy efficient hvac contractors are there based in Ireland?

RevenueBase identified 127 energy efficient hvac 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?

Rockwell, headquartered in Ireland, tops this list with the largest team on record.

Which city has the most energy efficient hvac contractors?

Dublin leads with 28 headquartered companies, followed by Cork (3) and Tallaght (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 842 verified decision-maker contacts tracked across these 127 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 16, 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.