Company lists · Data refreshed September 2026

Top 25 Sustainable hvac contractors based in Ireland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 18, 2026 125 companies tracked

RevenueBase identified 125 sustainable hvac contractors headquartered in Ireland as of September 2026 and tracks 54,605 professional contacts across them, including 7,670 with verified work emails. Dublin is the largest hub.

This list covers sustainable 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 18, 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 18, 2026 86% judged on-target in blind review

125Companies

54,605Contacts tracked

7,670Verified emails

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The 25 largest sustainable hvac contractors based in Ireland

Ranked by team size

Top 25 of 125 sustainable hvac contractors based in Ireland, ranked by team size, largest first. Data refreshed Sep 18, 2026. RevenueBase Smart Search rates how each company's information relates to sustainable 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	Johnson Controls	Indirect evidence	Cork, IrelandHQ checked Sep 18, 2026	10001+	52,736 contacts →
	Indirect evidence “Johnson Controls is a global leader in thermal management, mission-critical building systems, energy efficiency and decarbonization.” Source: RevenueBase Database · checked Sep 18, 2026
2	Tritech Engineering	Partial evidence	Dublin 22, IrelandHQ checked Sep 18, 2026	201-500	173 contacts →
	Partial evidence “Driving ESG Success Through Precision Engineering Investors today face increasing pressure to achieve higher building performance standards, meet strict sustainability targets…” Source: RevenueBase Database · checked Sep 18, 2026
3	Rockwell	Partial evidence	Cork, IrelandHQ checked Sep 18, 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 18, 2026
4	Crystal AIR LTD	Indirect evidence	Clane, IrelandHQ checked Sep 18, 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 18, 2026
5	Gaffney Mechanical	Indirect evidence	Dublin, IrelandHQ checked Sep 18, 2026	51-200	93 contacts →
	Indirect evidence “ENGINEERING EXPERTISE THAT DELIVERS INTELLIGENCE, EXCELLENCE & INNOVATION TO EVERY PROJECT.” Source: RevenueBase Database · checked Sep 18, 2026
6	Airconmech	Partial evidence	Old Dublin Road, IrelandHQ checked Sep 18, 2026	51-200	89 contacts →
	Partial 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 18, 2026
7	Quinn Downes Group	Indirect evidence	Dublin 12, IrelandHQ checked Sep 18, 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 18, 2026
8	Munters Corp Ireland LTD	Indirect evidence	Cork, IrelandHQ checked Sep 18, 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 18, 2026
9	Burlington Engineering	Indirect evidence	Dublin, IrelandHQ checked Sep 18, 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 18, 2026
10	Dominic O'connor LTD	Partial evidence	Loughrea, IrelandHQ checked Sep 18, 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 18, 2026
11	Jcps Mechanical LTD	Partial evidence	Dublin, IrelandHQ checked Sep 18, 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 18, 2026
12	Danann AIR Limited	Indirect evidence	Balbriggan, IrelandHQ checked Sep 18, 2026	51-200	39 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 18, 2026
13	Spectrum Engineering	Partial evidence	Dublin, IrelandHQ checked Sep 18, 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 18, 2026
14	Crossflow LTD	Indirect evidence	Dublin 12, IrelandHQ checked Sep 18, 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 18, 2026
15	Kelly RAC	Partial evidence	Ennis, IrelandHQ checked Sep 18, 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 18, 2026
16	M&p Mechanical	Partial evidence	Dublin, IrelandHQ checked Sep 18, 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 18, 2026
17	Flowtech Engineering LTD	Partial evidence	Kildare, IrelandHQ checked Sep 18, 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 18, 2026
18	Trane Ireland	Partial evidence	Dublin, IrelandHQ checked Sep 18, 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 18, 2026
19	Crosbie Group	Partial evidence	Dublin 12, IrelandHQ checked Sep 18, 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 18, 2026
20	Symphony Energy	Indirect evidence	Wicklow, IrelandHQ checked Sep 18, 2026	11-50	17 contacts →
	Indirect evidence “Symphony Energy is a global leader in optimising energy performance in the commercial built environment.” Source: RevenueBase Database · checked Sep 18, 2026
21	Citycool	Indirect evidence	Duleek, IrelandHQ checked Sep 18, 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 18, 2026
22	Coolrite	Indirect evidence	Bailieborough, IrelandHQ checked Sep 18, 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 18, 2026
23	Efficient Climate Control	Partial evidence	Dublin 11, IrelandHQ checked Sep 18, 2026	11-50	15 contacts →
	Partial evidence “Efficient Climate Control provides HVAC and mechanical services across commercial and industrial environments.” Source: RevenueBase Database · checked Sep 18, 2026
24	Frontline Energy	Indirect evidence	Dublin 4, IrelandHQ checked Sep 18, 2026	11-50	15 contacts →
	Indirect evidence “We are energy innovators and pride ourselves in delivering an end to end range of expertise for the built environment that saves energy, carbon, time and cost.” Source: RevenueBase Database · checked Sep 18, 2026
25	Systemcore	Indirect evidence	Dublin, IrelandHQ checked Sep 18, 2026	11-50	15 contacts →
	Indirect evidence “We are the next generation of M&E consulting engineers, dedicated to designing systems for low-carbon, intelligent, self-optimising spaces that enhance occupant well-being, and…” Source: RevenueBase Database · checked Sep 18, 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: sustainable 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 sustainable hvac contractors.
Partial evidence: Its own public description names part of sustainable hvac contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name sustainable 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 125 sustainable hvac contractors based in Ireland

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Sustainable hvac contractors based in Ireland at a glance

As of Sep 18, 2026

14.0%Verified-email coverage

436.8Average contacts per company

11-50Median size (employees)

19.2%Largest-city concentration · Dublin

Sep 18, 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 sustainable 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 “sustainable 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 sustainable 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 sustainable 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, 7,670 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 18, 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.

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 sustainable 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 sustainable hvac contractors are there based in Ireland?

RevenueBase identified 125 sustainable 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?

Johnson Controls, headquartered in Milwaukee, tops this list with the largest team on record.

Which city has the most sustainable hvac contractors?

Dublin leads with 24 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 7,670 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 18, 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.