Company lists · Data refreshed September 2026

Top 25 Hvac optimization software companies based in Germany

Name: Hvac optimization software companies based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 28, 2026 906 companies tracked

RevenueBase identified 906 hvac optimization software companies headquartered in Germany as of September 2026 and tracks 18,602 professional contacts across them, including 3,826 with verified work emails. Berlin is the largest hub.

This list covers hvac optimization software companies headquartered in Germany, 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 28, 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 28, 2026 86% judged on-target in blind review

906Companies

18,602Contacts tracked

3,826Verified emails

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The 25 largest hvac optimization software companies based in Germany

Ranked by team size

Top 25 of 906 hvac optimization software companies based in Germany, ranked by team size, largest first. Data refreshed Sep 28, 2026. RevenueBase Smart Search rates how each company's information relates to hvac optimization software companies: 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	Viessmann Climate Solutions	Indirect evidence	Allendorf, GermanyHQ checked Sep 28, 2026	10001+	2,061 contacts →
	Indirect evidence “Founded in 1917 as a heating technology manufacturer, today Viessmann Climate Solutions is a leading global provider of sustainable climate (heating, cooling, water and air…” Source: RevenueBase Database · checked Sep 28, 2026
2	ISTA	Indirect evidence	Essen, GermanyHQ checked Sep 28, 2026	5,001-10,000	1,406 contacts →
	Indirect evidence “Wir geben Häusern eine Zukunft.” Source: RevenueBase Database · checked Sep 28, 2026
3	Fläktgroup	Partial evidence	Herne, GermanyHQ checked Sep 28, 2026	1,001-5,000	1,028 contacts →
	Partial evidence “FläktGroup, a Samsung company, is a leader in air technology, delivering best in class, innovative and energy-efficient HVAC solutions, whilst reducing customer’s carbon footprint.” Source: RevenueBase Database · checked Sep 28, 2026
4	Kieback&peter	Indirect evidence	Berlin, GermanyHQ checked Sep 28, 2026	1,001-5,000	580 contacts →
	Indirect evidence “Our DNA are sustainable buildings As a Smart Building Solutioneer, we combine intelligent building technologies, data-based services, sustainable excellence and multiple synergy…” Source: RevenueBase Database · checked Sep 28, 2026
5	Wolf Gmbh	Indirect evidence	Mainburg, GermanyHQ checked Sep 28, 2026	1,001-5,000	484 contacts →
	Indirect evidence “As a leading supplier of heating and air handling systems, we are perfectly in tune with you.” Source: RevenueBase Database · checked Sep 28, 2026
6	Kermi Raumklima	Indirect evidence	Plattling, GermanyHQ checked Sep 28, 2026	1,001-5,000	275 contacts →
	Indirect evidence “Mit Systemlösungen zum energieeffizienten Heizen, Kühlen und Lüften arbeitet KERMI täglich daran, einen nachhaltigen Wandel zu erzeugen – und das bereits seit über sechs…” Source: RevenueBase Database · checked Sep 28, 2026
7	TADO	Indirect evidence	München, GermanyHQ checked Sep 28, 2026	51-200	162 contacts →
	Indirect evidence “At tado° we believe that unnecessarily wasting energy should be a thing of the past.” Source: RevenueBase Database · checked Sep 28, 2026
8	Glen Dimplex Deutschland	Indirect evidence	Kulmbach, GermanyHQ checked Sep 28, 2026	501-1,000	148 contacts →
	Indirect evidence “Glen Dimplex Deutschland (GDD) is part of the international Glen Dimplex Group based in Ireland - a leading international supplier of electric heating solutions and domestic…” Source: RevenueBase Database · checked Sep 28, 2026
9	DBK Group	Indirect evidence	Rülzheim, GermanyHQ checked Sep 28, 2026	501-1,000	137 contacts →
	Indirect evidence “DBK is a well established medium-sized company actively promoting the useful and effective deployment of energy.” Source: RevenueBase Database · checked Sep 28, 2026
10	Elmatic Gmbh	Indirect evidence	Hamburg, GermanyHQ checked Sep 28, 2026	501-1,000	135 contacts →
	Indirect evidence “ELMATIC ist ein erfolgreiches Dienstleistungsunternehmen der Gebäudetechnik für gewerbliche und industrielle Kunden.” Source: RevenueBase Database · checked Sep 28, 2026
11	Otto Building Technologies Gmbh	Indirect evidence	Bad Berleburg, GermanyHQ checked Sep 28, 2026	501-1,000	128 contacts →
	Indirect evidence “1967 gegründet, sind wir heute nicht nur eines der führenden deutschen Unternehmen im gebäudetechnischen Anlagenbau, sondern vor allem auch überzeugte Klimaschützer.” Source: RevenueBase Database · checked Sep 28, 2026
12	Apleona Wolfferts Gmbh	Indirect evidence	Köln, GermanyHQ checked Sep 28, 2026	1,001-5,000	113 contacts →
	Indirect evidence “Wir verbinden Anlagentechnik und maßgeschneiderte Services, um die Energie unserer Kunden optimal einzusetzen - und das seit über 120 Jahren.” Source: RevenueBase Database · checked Sep 28, 2026
13	August Brötje Gmbh	Indirect evidence	Rastede, GermanyHQ checked Sep 28, 2026	201-500	112 contacts →
	Indirect evidence “BRÖTJE efficient heating system technology.” Source: RevenueBase Database · checked Sep 28, 2026
14	Dresdner Kühlanlagenbau Gmbh	Indirect evidence	GermanyHQ checked Sep 28, 2026	501-1,000	108 contacts →
	Indirect evidence “DKA - Ihr Spezialist für kälte- und klimatechnische Anlagen seit 1953 Dresdner Kühlanlagenbau GmbH (DKA) ist mit über 500 Mitarbeiterinnen und Mitarbeitern der größte…” Source: RevenueBase Database · checked Sep 28, 2026
15	beyonnex.io	Indirect evidence	Hamburg, GermanyHQ checked Sep 28, 2026	51-200	105 contacts →
	Indirect evidence “Pioneer of smart real estate We make real estate climate-friendly, comfortable and economical: To achieve this we digitize and network buildings on behalf of our customers and…” Source: RevenueBase Database · checked Sep 28, 2026
16	Green Fusion	Indirect evidence	Berlin, GermanyHQ checked Sep 28, 2026	51-200	84 contacts →
	Indirect evidence “The energy-saving pilot for all boiler rooms.” Source: RevenueBase Database · checked Sep 28, 2026
17	Meteoviva	Indirect evidence	52064 Aachen, GermanyHQ checked Sep 28, 2026	51-200	81 contacts →
	Indirect evidence “With about 14 million hours of operation, meteoviva is the leading provider for AI-based solutions for optimised building operations worldwide - and ISO 27001 certified.” Source: RevenueBase Database · checked Sep 28, 2026
18	Deos AG	Indirect evidence	Rheine, GermanyHQ checked Sep 28, 2026	51-200	78 contacts →
	Indirect evidence “As a technology leader in building automation, DEOS AG has been developing and producing innovative building automation and energy management systems “Made in Germany” with secure…” Source: RevenueBase Database · checked Sep 28, 2026
19	Swegon Germany	Indirect evidence	Garching, GermanyHQ checked Sep 28, 2026	201-500	78 contacts →
	Indirect evidence “Swegon offers” Source: RevenueBase Database · checked Sep 28, 2026
20	Oni-Wärmetrafo Gmbh	Indirect evidence	Lindlar, GermanyHQ checked Sep 28, 2026	201-500	72 contacts →
	Indirect evidence “Seit über vier Jahrzehnten setzen Kunden auf innovative Energiespartechnik aus dem Hause ONI.” Source: RevenueBase Database · checked Sep 28, 2026
21	Weiss Klimatechnik Gmbh	Indirect evidence	Reiskirchen, GermanyHQ checked Sep 28, 2026	51-200	69 contacts →
	Indirect evidence “Weiss Klimatechnik offers reliable climate solutions wherever people and machinery are challenged: in industrial production processes, hospitals, mobile operating tents or in the…” Source: RevenueBase Database · checked Sep 28, 2026
22	Siegle Epple Gmbh & Co. KG	Indirect evidence	Stuttgart, GermanyHQ checked Sep 28, 2026	501-1,000	67 contacts →
	Indirect evidence “ENERGIEEFFIZIENZ NACH MASS.” Source: RevenueBase Database · checked Sep 28, 2026
23	Neuberger Gebäudeautomation	Indirect evidence	Rothenburg Ob Der Tauber, GermanyHQ checked Sep 28, 2026	501-1,000	60 contacts →
	Indirect evidence “Die Neuberger Gebäudeautomation GmbH, 1968 gegründet und mit Sitz im malerischen Rothenburg ob der Tauber in Mittelfranken, zählt zu den führenden Anbietern in den Bereichen…” Source: RevenueBase Database · checked Sep 28, 2026
24	LTG Aktiengesellschaft	Indirect evidence	Stuttgart, GermanyHQ checked Sep 28, 2026	51-200	59 contacts →
	Indirect evidence “LTG – Das Innovationsunternehmen Wir feiern ein Jahrhundert!” Source: RevenueBase Database · checked Sep 28, 2026
25	Menerga Deutschland	Indirect evidence	Mülheim An Der Ruhr, GermanyHQ checked Sep 28, 2026	201-500	57 contacts →
	Indirect evidence “Menerga has been developing and producing innovative ventilation and air conditioning technology for diverse fields of application since 1980.” Source: RevenueBase Database · checked Sep 28, 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: hvac optimization software 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 optimization software companies.
Partial evidence: Its own public description names part of hvac optimization software companies, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name hvac optimization software 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 906 hvac optimization software companies based in Germany

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Hvac optimization software companies based in Germany at a glance

As of Sep 28, 2026

20.6%Verified-email coverage

20.5Average contacts per company

11-50Median size (employees)

5.6%Largest-city concentration · Berlin

Sep 28, 2026Page data refreshed

Companies by employee count

1-10

411

11-50

267

51-200

117

201-500

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency for this list is measured worldwide rather than for Germany, so it is reported there. Company counts and contact totals on this page are exact for Germany, over 906 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 hvac optimization software 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 Germany whose own description of what they do matches “hvac optimization software 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 optimization software 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 optimization software companies, and records with no verified work email. Companies headquartered outside Germany 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, 3,826 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 28, 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.

Hvac optimization software companies by metro

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 hvac optimization software companies, 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 hvac optimization software companies are there based in Germany?

RevenueBase identified 906 hvac optimization software companies headquartered in Germany 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?

Viessmann Climate Solutions, headquartered in Allendorf, tops this list with the largest team on record.

Which city has the most hvac optimization software companies?

Berlin leads with 51 headquartered companies, followed by Hamburg (30) and Munchen (19).

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 3,826 verified decision-maker contacts tracked across these 906 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 28, 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.