Company lists · Data refreshed September 2026
Top 25 Hvac companies based in Ireland
This directory contains 100 HVAC companies based in Ireland, with contact details for 1,115 people and 512 email addresses. Dublin is the single most-represented city among the companies listed, and the data was published in September 2026.
HVAC companies install, maintain, repair, and replace heating, ventilation, and air conditioning systems for residential, commercial, and industrial customers. This list covers companies that provide HVAC installation, maintenance, repair, replacement, or related services. Ranked by team size, largest first. Data current as of September 7, 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.
The 25 largest hvac companies based in Ireland
Ranked by team size| # | Company | RevenueBase Smart Search | Contacts | ||
|---|---|---|---|---|---|
| 1 | Indirect evidence | 96 contacts → | |||
“Crystal Air is a leading service supplier in the field of air conditioning with regard to installations, servicing and maintenance.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 2 | Indirect evidence | 85 contacts → | |||
“Quinn Downes Mechanical Services Ltd was founded in by our Directors Pat Quinn and Derek Downes.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 3 | Indirect evidence | 64 contacts → | |||
“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: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 4 | Indirect evidence | 55 contacts → | |||
“Dominic O'Connor Ltd are a progressive mechanical building services contractor based in the Loughrea, Co.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 5 | Strong evidence | 48 contacts → | |||
“Thermodial are experts in planned preventative maintenance (PPM) of heating, ventilation and air conditioning (HVAC), BEMS, electrical and water services – since 1986.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 6 | Indirect evidence | 47 contacts → | |||
“Lynskey Engineering Limited provide a wide scope of Mechanical Building Services covering commercial, industrial, process and mixed use developments.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 7 | Indirect evidence | 40 contacts → | |||
“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: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 8 | Indirect evidence | 39 contacts → | |||
Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 9 | Strong evidence | 35 contacts → | |||
“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: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 10 | Strong evidence | 30 contacts → | |||
“Kelly Refrigeration and Air Conditioning is one of Ireland’s leading refrigeration, air conditioning and HVAC service providers, supporting commercial and industrial clients…” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 11 | Strong evidence | 22 contacts → | |||
“Flowtech Engineering is a privately owned company that is able to assist with all HVAC requirements.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 12 | Indirect evidence | 20 contacts → | |||
“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: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 13 | Indirect evidence | 20 contacts → | |||
“Acquired by current shareholders in 2012, REL Group has expanded beyond their humble beginnings in the 1950s to include a range of speciality divisions including refrigeration…” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 14 | Strong evidence | 19 contacts → | |||
“Make Trane Ireland your go-to commercial HVAC partner – for rental and sales of heating, ventilation and air conditioning systems.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 15 | Strong evidence | 19 contacts → | |||
“Crosbie Group designs, delivers and maintains mission-critical refrigeration and HVAC systems for environments where failure is not an option.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 16 | Indirect evidence | 17 contacts → | |||
“Symphony Energy is a global leader in optimising energy performance in the commercial built environment.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 17 | Indirect evidence | 17 contacts → | |||
“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: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 18 | Strong evidence | 15 contacts → | |||
“Efficient Climate Control provides HVAC and mechanical services across commercial and industrial environments.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 19 | Strong evidence | 14 contacts → | |||
“Established in 1970, Coolair have over 40 years market leading experience in the supply, installation, service and maintenance of HVAC Systems.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 20 | Indirect evidence | 13 contacts → | |||
“Blanchfield Heating was established in 1994 as a private owned business with a flexible client-focused approach and an appreciation of long term business relationships.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 21 | Indirect evidence | 13 contacts → | |||
“Refrigeration Solutions Limited is a commercial / retail refrigeration and air-conditioning company based in Co.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 22 | Indirect evidence | 12 contacts → | |||
“Entropic provide low energy, long life, air conditioning systems for indoor environments.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 23 | Indirect evidence | 11 contacts → | |||
“Euro Gas – Ireland’s Leading Heating, Ventilation & Air Conditioning Specialists.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 24 | Strong evidence | 11 contacts → | |||
“CCSI - HVAC and Engineering Software.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
| 25 | Indirect evidence | 11 contacts → | |||
“Fläktgroup Ireland Ltd with over 40 years presence in the Irish market.” Source: company website · checked Sep 7, 2026Thanks. The Data Team will review it. | |||||
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 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 companies.
- Partial evidence
- Its own public description names part of hvac companies, so it works in or next to the category without describing itself that way.
- Indirect evidence
- The description shown does not name hvac 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 100 hvac companies based in Ireland
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Hvac companies based in Ireland at a glance
As of Sep 7, 2026Companies by employee count
Freshness & accuracy
How recently the business emails on this list were verified
Email last verified
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 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 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 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 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, 512 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 7, 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
How many HVAC companies are based in Ireland?
This list contains 100 HVAC companies based in Ireland.
Where are most HVAC companies located?
Dublin is the single most-represented city among the companies on this list.
How can I find contacts at HVAC companies?
The directory includes contact details for 1,115 people and 512 email addresses associated with the listed HVAC companies.
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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.