Company lists · Data refreshed September 2026

Top 25 Commercial heating system installers worldwide

Name: Commercial heating system installers worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 19, 2026 14,869 companies tracked

RevenueBase identified 14,869 commercial heating system installers worldwide as of September 2026 and tracks 85,673 professional contacts across them, including 21,038 with verified work emails. The United States is the largest market and London the largest hub.

This list covers commercial heating system installers worldwide, 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. Country and city lists for commercial heating system installers follow the table.

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

14,869Companies

85,673Contacts tracked

21,038Verified emails

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The 25 largest commercial heating system installers worldwide

Ranked by team size

Top 25 of 14,869 commercial heating system installers worldwide, ranked by team size, largest first. Data refreshed Sep 19, 2026. RevenueBase Smart Search rates how each company's information relates to commercial heating system installers: 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	Bravida Danmark A S	Indirect evidence	Brøndby, DenmarkHQ checked Sep 19, 2026	1,001-5,000	1,298 contacts →
	Indirect evidence “Bravida Danmark er blandt landets største tekniske installations- og servicevirksomheder med over medarbejdere i byer landet over, og vi er en arbejdsplads, der har plads til alle.” Source: RevenueBase Database · checked Sep 19, 2026
2	Ventec S.A	Indirect evidence	Casablanca, MoroccoHQ checked Sep 19, 2026	1,001-5,000	959 contacts →
	Indirect evidence “La Société Ventec a été créée au Maroc en 1949 par Monsieur Albert MARQUET Président Directeur Général de Ventec en France.” Source: RevenueBase Database · checked Sep 19, 2026
3	Proxiserve	Indirect evidence	Levallois-perret, FranceHQ checked Sep 19, 2026	1,001-5,000	935 contacts →
	Indirect evidence “A major player in the energy transition and leader in home services, PROXISERVE provides its customers with innovative solutions enabling them to reduce their energy consumption…” Source: RevenueBase Database · checked Sep 19, 2026
4	BAXI	Strong evidence	Warwick, United KingdomHQ checked Sep 19, 2026	1,001-5,000	850 contacts →
	Strong evidence “We're leading the energy transition to zero carbon, by offering complete residential and commercial heating and hot water solutions.” Source: RevenueBase Database · checked Sep 19, 2026
5	Feenstra	Indirect evidence	Lelystad, NetherlandsHQ checked Sep 19, 2026	1,001-5,000	781 contacts →
	Indirect evidence “Sinds het ontstaan in 1947 is Feenstra marktleider in installatietechniek met een nationale dekking.” Source: RevenueBase Database · checked Sep 19, 2026
6	Wolf Gmbh	Strong evidence	Mainburg, GermanyHQ checked Sep 19, 2026	1,001-5,000	484 contacts →
	Strong evidence “As a leading supplier of heating and air handling systems, we are perfectly in tune with you.” Source: RevenueBase Database · checked Sep 19, 2026
7	Ferroli Group	Partial evidence	San Bonifacio, ItalyHQ checked Sep 19, 2026	1,001-5,000	418 contacts →
	Partial evidence “Comfort, designed around you – Since 1955, Ferroli has been a trusted name in HVAC, delivering innovative solutions for heating, cooling and hot water that combine comfort, energy…” Source: RevenueBase Database · checked Sep 19, 2026
8	United Mechanical	Strong evidence	San Jose, CA, United StatesHQ checked Sep 19, 2026	201-500	346 contacts →
	Strong evidence “United Mechanical specializes in HVAC and Plumbing systems design, construction, retrofit, repair, and 24/7 emergency service for commercial and industrial properties throughout…” Source: RevenueBase Database · checked Sep 19, 2026
9	Logista Hometech	Indirect evidence	Arras, FranceHQ checked Sep 19, 2026	1,001-5,000	344 contacts →
	Indirect evidence “Spécialiste de la maintenance immobilière, nous entretenons et dépannons les équipements de chauffage, VMC, plomberie, sanitaire, climatisation… pour les bailleurs sociaux et les…” Source: RevenueBase Database · checked Sep 19, 2026
10	Space Engineering Services LTD	Partial evidence	Bristol, United KingdomHQ checked Sep 19, 2026	201-500	312 contacts →
	Partial evidence “Space Engineering Services is the UK’s leading provider of refrigeration, heating, ventilation and air conditioning services.” Source: RevenueBase Database · checked Sep 19, 2026
11	Rinnai Australia	Indirect evidence	Braeside, AustraliaHQ checked Sep 19, 2026	201-500	294 contacts →
	Indirect evidence “Following Rinnai's international origins dating back more than 100 years, Rinnai Australia was established 50 years ago and since then has been providing Australians with the best…” Source: RevenueBase Database · checked Sep 19, 2026
12	Weil-Mclain	Strong evidence	Burr Ridge, IL, United StatesHQ checked Sep 19, 2026	501-1,000	279 contacts →
	Strong evidence “Weil-McLain® is a leading North American designer and manufacturer of hydronic comfort heating systems for residential, commercial and institutional buildings since 1881.” Source: RevenueBase Database · checked Sep 19, 2026
13	The Arcticom Group	Partial evidence	Walnut Creek, CA, United StatesHQ checked Sep 19, 2026	1,001-5,000	259 contacts →
	Partial evidence “At The Arcticom Group (TAG), our family of best-in-market operating companies delivers the highest-quality service and customer experience in commercial and industrial HVACR.” Source: RevenueBase Database · checked Sep 19, 2026
14	ELCO	Partial evidence	Kehlen, LuxembourgHQ checked Sep 19, 2026	201-500	249 contacts →
	Partial evidence “Electrical installations in buildings Heating Climatisation Facility Management” Source: RevenueBase Database · checked Sep 19, 2026
15	Morris-Jenkins	Indirect evidence	Charlotte, NC, United StatesHQ checked Sep 19, 2026	501-1,000	225 contacts →
	Indirect evidence “Morris-Jenkins is like family!” Source: RevenueBase Database · checked Sep 19, 2026
16	Airtron Heating & AIR Conditioning	Partial evidence	Columbus, OH, United StatesHQ checked Sep 19, 2026	1,001-5,000	214 contacts →
	Partial evidence “Airtron has developed itself into one of the leading heating, ventilation, and air conditioning (HVAC) providers.” Source: RevenueBase Database · checked Sep 19, 2026
17	Energy Air, INC	Indirect evidence	Orlando, FL, United StatesHQ checked Sep 19, 2026	201-500	213 contacts →
	Indirect evidence Source: RevenueBase Database · checked Sep 19, 2026
18	Gateway Mechanical Services	Strong evidence	Edmonton, AB, CanadaHQ checked Sep 19, 2026	201-500	208 contacts →
	Strong evidence “Founded in 1968, Gateway Mechanical is a privately owned company that has established itself as a leader in the commercial and industrial refrigeration, heating and air…” Source: RevenueBase Database · checked Sep 19, 2026
19	Gardiner	Indirect evidence	Solon, OH, United StatesHQ checked Sep 19, 2026	201-500	205 contacts →
	Indirect evidence “At Gardiner, we've gotten used to clients being shocked by everything we can do to improve a building.” Source: RevenueBase Database · checked Sep 19, 2026
20	Haller Enterprises	Partial evidence	Lititz, PA, United StatesHQ checked Sep 19, 2026	201-500	191 contacts →
	Partial evidence “Since 1981, Haller Enterprises has proudly served central and eastern Pennsylvania as a leader in heating, cooling, plumbing, and electrical services.” Source: RevenueBase Database · checked Sep 19, 2026
21	R.F. Macdonald CO	Indirect evidence	Hayward, CA, United StatesHQ checked Sep 19, 2026	201-500	190 contacts →
	Indirect evidence “R.F.” Source: RevenueBase Database · checked Sep 19, 2026
22	Baxi Italia	Indirect evidence	Bassano Del Grappa, ItalyHQ checked Sep 19, 2026	501-1,000	189 contacts →
	Indirect evidence “Nata negli anni 1925 come produttore di prodotti smaltati, dagli anni 70 Baxi è entrata nel settore HVAC con apparecchi domestici per il riscaldamento e la climatizzazione.” Source: RevenueBase Database · checked Sep 19, 2026
23	Bonarius Bedrijven	Indirect evidence	Zwanenburg, NetherlandsHQ checked Sep 19, 2026	201-500	186 contacts →
	Indirect evidence “Bonarius Bedrijven De naam Bonarius was lange tijd synoniem voor de aanleg en het onderhoud van cv-installaties.” Source: RevenueBase Database · checked Sep 19, 2026
24	Maxair Mechanical	Indirect evidence	Marietta, GA, United StatesHQ checked Sep 19, 2026	201-500	183 contacts →
	Indirect evidence “MAXAIR Mechanical, founded in 1988, is a people first company.” Source: RevenueBase Database · checked Sep 19, 2026
25	Vaillant UK	Partial evidence	Belper, United KingdomHQ checked Sep 19, 2026	501-1,000	179 contacts →
	Partial evidence “What does it take to deliver confidence at every stage of the heating journey?” 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: commercial heating system installers. 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 commercial heating system installers.
Partial evidence: Its own public description names part of commercial heating system installers, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name commercial heating system installers. 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 14,869 commercial heating system installers worldwide

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Commercial heating system installers worldwide at a glance

As of Sep 19, 2026

24.6%Verified-email coverage

5.8Average contacts per company

1-10Median size (employees)

0.9%Largest-city concentration · London

Sep 19, 2026Page data refreshed

Companies by employee count

1-10

8,147

11-50

5,085

51-200

997

201-500

136

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

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 commercial heating system installers, 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.
Coverage: Every country. Country and city lists for commercial heating system installers are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “commercial heating system installers”. 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 commercial heating system installers), 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 commercial heating system installers, and records with no verified work email.
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, 21,038 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.

Commercial heating system installers by location

31 lists · largest first

Every Commercial heating system installers list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

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 commercial heating system installers, 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 commercial heating system installers are there worldwide?

RevenueBase identified 14,869 commercial heating system installers worldwide 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?

Bravida Danmark A S, headquartered in Brondby, tops this list with the largest team on record.

Which country has the most commercial heating system installers?

The United States leads with 4,737 companies, followed by the United Kingdom (2,177) and France (1,119). Every commercial heating system installers list by country and city is linked on this page.

Which city has the most commercial heating system installers?

London leads with 138 headquartered companies, followed by Houston (57) and New York (55).

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 21,038 verified decision-maker contacts tracked across these 14,869 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.