Company lists · Data refreshed September 2026

Top 25 Ventilation system contractors based in Ireland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 63 companies tracked

RevenueBase identified 63 ventilation system contractors headquartered in Ireland as of September 2026 and tracks 551 professional contacts across them, including 222 with verified work emails. Dublin is the largest hub.

This list covers ventilation system 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 19, 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 19, 2026 86% judged on-target in blind review

63Companies

551Contacts tracked

222Verified emails

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The 25 largest ventilation system contractors based in Ireland

Ranked by team size

Top 25 of 63 ventilation system contractors based in Ireland, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to ventilation system 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	Crystal AIR LTD	Indirect evidence	Clane, IrelandHQ checked Sep 19, 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 19, 2026
2	Danann AIR Limited	Indirect evidence	Balbriggan, IrelandHQ checked Sep 19, 2026	51-200	39 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
3	Crossflow LTD	Strong evidence	Dublin 12, IrelandHQ checked Sep 19, 2026	51-200	34 contacts →
	Strong 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 19, 2026
4	Flowtech Engineering LTD	Indirect evidence	Kildare, IrelandHQ checked Sep 19, 2026	11-50	22 contacts →
	Indirect evidence “Flowtech Engineering is a privately owned company that is able to assist with all HVAC requirements.” Source: RevenueBase Database · checked Sep 19, 2026
5	Proair Heat Recovery Ventilation Systems	Strong evidence	Tuam Road, IrelandHQ checked Sep 19, 2026	11-50	20 contacts →
	Strong evidence “ProAir Heat Recovery Ventilation Systems is Ireland’s only manufacturer and industry leading specialist of Mechanical Ventilation with Heat Recovery (MVHR) systems.” Source: RevenueBase Database · checked Sep 19, 2026
6	Trane Ireland	Strong evidence	Dublin, IrelandHQ checked Sep 19, 2026	n/a	19 contacts →
	Strong 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 19, 2026
7	VSS Ireland LTD	Strong evidence	Carlow, IrelandHQ checked Sep 19, 2026	11-50	19 contacts →
	Strong evidence “Welcome to Ventilation Surveys and Services Ireland, we offer full assessment and maintenance of your ductwork systems.” Source: RevenueBase Database · checked Sep 19, 2026
8	Panelduct	Indirect evidence	Castlebar, IrelandHQ checked Sep 19, 2026	11-50	18 contacts →
	Indirect evidence “Air distribution.” Source: RevenueBase Database · checked Sep 19, 2026
9	Q-Nis	Indirect evidence	Dublin 12, IrelandHQ checked Sep 19, 2026	1-10	16 contacts →
	Indirect evidence “Over the past 12 years Q-nis has continually developed in order to meet the demands of the market place with specific focus on the supply of Louvres, Dampers, Air Handling Units…” Source: RevenueBase Database · checked Sep 19, 2026
10	Efficient Climate Control	Indirect evidence	Dublin 11, IrelandHQ checked Sep 19, 2026	11-50	15 contacts →
	Indirect evidence “Efficient Climate Control provides HVAC and mechanical services across commercial and industrial environments.” Source: RevenueBase Database · checked Sep 19, 2026
11	Coolair LTD	Partial evidence	Dublin 24, IrelandHQ checked Sep 19, 2026	11-50	14 contacts →
	Partial evidence “Established in 1970, Coolair have over 40 years market leading experience in the supply, installation, service and maintenance of HVAC Systems.” Source: RevenueBase Database · checked Sep 19, 2026
12	Entropic	Partial evidence	Maynooth, IrelandHQ checked Sep 19, 2026	11-50	12 contacts →
	Partial evidence “Entropic provide low energy, long life, air conditioning systems for indoor environments.” Source: RevenueBase Database · checked Sep 19, 2026
13	Fläktgroup Ireland	Indirect evidence	Tallaght, IrelandHQ checked Sep 19, 2026	11-50	11 contacts →
	Indirect evidence “Fläktgroup Ireland Ltd with over 40 years presence in the Irish market.” Source: RevenueBase Database · checked Sep 19, 2026
14	Walsh & Sheehan LTD	Indirect evidence	Co. Kilkenny, IrelandHQ checked Sep 19, 2026	11-50	7 contacts →
	Indirect evidence “Walsh & Sheehan Ltd was founded in 2001 by Business Partners Owen Sheehan and Brian Walsh.” Source: RevenueBase Database · checked Sep 19, 2026
15	Thermoheat Mechanical LTD	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	11-50	6 contacts →
	Partial evidence “ThermoHeat is a Dublin based mechanical company that offers a complete range of heating, plumbing, ventilation and air-conditioning solutions to commercial clients.” Source: RevenueBase Database · checked Sep 19, 2026
16	Southern Building Products LTD	Partial evidence	Dublin, IrelandHQ checked Sep 19, 2026	11-50	6 contacts →
	Partial evidence “Southern Building products offer Ireland's most comprehensive range of ventilation products, providing quality solutions for eaves, slate, tile and ridge, as well as full range of…” Source: RevenueBase Database · checked Sep 19, 2026
17	Indoor Ventilation Solutions Limited	Partial evidence	Slane, IrelandHQ checked Sep 19, 2026	1-10	5 contacts →
	Partial evidence “Indoor ventilation solutions is a recently established business bringing together all the knowledge, expertise and attributes of skills in the industry for servicing and…” Source: RevenueBase Database · checked Sep 19, 2026
18	Flynn Heat Recovery Systems	Strong evidence	Ballycumber, IrelandHQ checked Sep 19, 2026	1-10	4 contacts →
	Strong evidence “Flynn Heat Recovery Systems is a market leader in all types of domestic and commercial ventilation systems, from simple MEV to counteract a condensation problem, to large scale…” Source: RevenueBase Database · checked Sep 19, 2026
19	Envision Engineering LTD	Indirect evidence	Dublin, IrelandHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “Envision Engineering has specialised in HVAC services project management, commissioning, testing and balancing and the qualification of clean room air handling services…” Source: RevenueBase Database · checked Sep 19, 2026
20	Deluxe Enviro LTD	Strong evidence	Co. Dublin, IrelandHQ checked Sep 19, 2026	11-50	4 contacts →
	Strong evidence “Deluxe Enviro are specialist ventilation contractors.” Source: RevenueBase Database · checked Sep 19, 2026
21	Airways Ventilation Hygiene Specialists	Indirect evidence	Co. Dublin, IrelandHQ checked Sep 19, 2026	1-10	4 contacts →
	Indirect evidence “Airways Canopy & Duct Cleaning Services Ltd.” Source: RevenueBase Database · checked Sep 19, 2026
22	Nuvent AIR Systems	Partial evidence	Dublin 24, IrelandHQ checked Sep 19, 2026	1-10	3 contacts →
	Partial evidence “Nuvent Air Systems are specialists in the supply and commissioning of fire / smoke dampers and control systems.” Source: RevenueBase Database · checked Sep 19, 2026
23	Comfort Solutions Retrofit	Indirect evidence	Newport, IrelandHQ checked Sep 19, 2026	11-50	3 contacts →
	Indirect evidence “We bring warmth, comfort and fresh air to your home or business with a keen emphasis on performance and quality.” Source: RevenueBase Database · checked Sep 19, 2026
24	A.S.K. Mechanical Services	Strong evidence	Dublin, IrelandHQ checked Sep 19, 2026	11-50	3 contacts →
	Strong evidence “Mechanical contractor providing heating, plumbing, air conditioning, ventilation services.” Source: RevenueBase Database · checked Sep 19, 2026
25	Sodac Distribution LTD	Partial evidence	Navan, IrelandHQ checked Sep 19, 2026	1-10	3 contacts →
	Partial evidence “Discover the Future of Ventilation!” Source: RevenueBase Database · checked Sep 19, 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: ventilation system 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 ventilation system contractors.
Partial evidence: Its own public description names part of ventilation system contractors, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name ventilation system 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 63 ventilation system contractors based in Ireland

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Ventilation system contractors based in Ireland at a glance

As of Sep 19, 2026

40.3%Verified-email coverage

8.7Average contacts per company

11-50Median size (employees)

17.5%Largest-city concentration · Dublin

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

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 63 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 ventilation system 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 “ventilation system 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 ventilation system 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 ventilation system 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, 222 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 19, 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 ventilation system 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 ventilation system contractors are there based in Ireland?

RevenueBase identified 63 ventilation system 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?

Crystal AIR LTD, headquartered in Clane, tops this list with the largest team on record.

Which city has the most ventilation system contractors?

Dublin leads with 11 headquartered companies, followed by Tallaght (5) and Arklow (1).

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 222 verified decision-maker contacts tracked across these 63 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 19, 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.