Company lists · Data refreshed September 2026

Top 25 Retrofit contractors based in Germany

Name: Retrofit contractors based in Germany
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 388 companies tracked

RevenueBase identified 388 company matches for retrofit contractors associated with Germany as of September 2026 and tracks 2,627 professional contacts across them, including 1,068 with verified work emails. Berlin is the largest hub.

This list covers company matches for retrofit contractors associated with Germany, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 17, 2026.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, 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 RevenueBase SmartSearch · Exact Recorded Sep 17, 2026 How this list was built

388Companies

2,627Contacts tracked

1,068Verified emails

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The 25 largest retrofit contractors based in Germany

Ranked by team size

Top 25 of 388 company matches for retrofit contractors based in Germany, ordered by professional contacts tracked in RevenueBase, largest first. Recorded Sep 17, 2026. The RevenueBase SmartSearch column shows Exact match membership in this saved search. Click a contact count to view that company's people. Totals use company locations recorded by RevenueBase; the displayed preview is a smaller selection.
#	Company	RevenueBase SmartSearch	Headquarters	Employees	Contacts
1	Lindner Group	Exact match	Arnstorf, GermanyHQ recorded Sep 17, 2026	5,001-10,000	1,129 contacts →
	Exact match “The Lindner Group is Europe's leading full-service provider - manufacturer and service provider - for interior fit-out, building envelope, building services and insulation…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Paul Tech AG	Exact match	Mannheim, GermanyHQ recorded Sep 17, 2026	51-200	155 contacts →
	Exact match “Die PAUL Tech AG mit Sitz in Mannheim macht Bestandsimmobilien grün und werthaltig.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Ecoworks	Exact match	Berlin, GermanyHQ recorded Sep 17, 2026	51-200	125 contacts →
	Exact match “ecoworks is the trusted partner for the housing sector when it comes to affordable, energy-efficient renovations.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Enloc AG	Exact match	Dresden, GermanyHQ recorded Sep 17, 2026	51-200	80 contacts →
	Exact match “ENLOC – Energiedienstleister der Wohnungswirtschaft Die Enloc bietet innovative Lösungen unter Einbeziehung erneuerbarer Energien im Rahmen der Wärmelieferung/Contracting.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	42watt	Exact match	Munich, GermanyHQ recorded Sep 17, 2026	51-200	47 contacts →
	Exact match “In a market full of complexity and empty promises, 42watt makes energy-efficient building modernization simple, reliable, and actionable.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	E-Con	Exact match	Memmingen, GermanyHQ recorded Sep 17, 2026	51-200	47 contacts →
	Exact match “e-con AG Die e-con AG ist seit 20 Jahren im Einsatz für erneuerbare Energien und versteht sich als Partner für die Energiewende.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Renowate	Exact match	Düsseldorf, GermanyHQ recorded Sep 17, 2026	11-50	33 contacts →
	Exact match “Einfach, schnell und nachhaltig sanieren.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	Renewa Gmbh	Exact match	Hamburg, GermanyHQ recorded Sep 17, 2026	51-200	29 contacts →
	Exact match “RENEWA ist dein unabhängiger Partner für energetische Sanierung.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Morgengrün	Exact match	Cologne, GermanyHQ recorded Sep 17, 2026	11-50	19 contacts →
	Exact match “MorgenGrün – Innovationen von ZWP Wir wollen vor allem eines: mit der Kraft von Innovationen Gebäude und Liegenschaften so gestalten, dass sie langfristig unserer ökologischen und…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	Blome Gmbh & Co. KG	Exact match	Bad Wünnenberg, GermanyHQ recorded Sep 17, 2026	51-200	19 contacts →
	Exact match “Blome GmbH & Co.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Envidatec	Exact match	Hamburg, GermanyHQ recorded Sep 17, 2026	11-50	18 contacts →
	Exact match “Consulting businesses on Energy Efficiency and Renewable Energy UN Sustainable Development Goals and International Cooperation Envidatec offers consulting services on all things…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Hetzel Sponheuer	Exact match	Essen, GermanyHQ recorded Sep 17, 2026	51-200	16 contacts →
	Exact match “Sie planen die Erweiterung eines Industriebaus?” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	Natelberg Gebäudetechnik Gmbh	Exact match	Rhauderfehn, GermanyHQ recorded Sep 17, 2026	11-50	15 contacts →
	Exact match “Natelberg Gebäudetechnik GmbH is a computer networking company based out of 9 Schwarzmoorstraße, Rhauderfehn, Germany.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Energy Partners Gmbh	Exact match	Traunstein, GermanyHQ recorded Sep 17, 2026	11-50	15 contacts →
	Exact match “Energy Partners offers a 360-degree service for the implementation of integrated rooftop energy projects for companies and organizations in the industrial and commercial sectors.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Adites Gmbh	Exact match	Bad Neustadt An Der Saale, GermanyHQ recorded Sep 17, 2026	11-50	13 contacts →
	Exact match “Die ADITES GmbH ist spezialisiert auf innovative Gebäudetechnik.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	TGA Bodensee Gmbh	Exact match	Salem, GermanyHQ recorded Sep 17, 2026	51-200	13 contacts →
	Exact match “tga bodensee GmbH ist ein Unternehmen, das die Beratung und Umsetzung von zukunftsweisender Haus- und Energietechnik sowohl für Privat- als auch Gewerbekunden anbietet.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Atmos Ind. Lüftungstechnik Gmbh	Exact match	Düsseldorf, GermanyHQ recorded Sep 17, 2026	11-50	12 contacts →
	Exact match “Wir arbeiten leidenschaftlich daran die Arbeitsbedingungen in gewerblichen und industriellen Objekten sicherer und angenehmer zu machen.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	H&s Energiesysteme	Exact match	Willich, GermanyHQ recorded Sep 17, 2026	11-50	11 contacts →
	Exact match “Die Herausforderung unserer Generation ist der Klimawandel, eine Mammutaufgabe.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	ECO Mondia Green Technology Europe Gmbh	Exact match	Dortmund, GermanyHQ recorded Sep 17, 2026	51-200	10 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Austrotherm Deutschland	Exact match	Wittenberge, GermanyHQ recorded Sep 17, 2026	51-200	10 contacts →
	Exact match “Austrotherm ist der Spezialist für klimaschützende, zukunftsorientierte und energiesparende Wärmedämmung vom Keller bis zum Dach.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Itgb Gmbh	Exact match	Dinslaken, GermanyHQ recorded Sep 17, 2026	11-50	10 contacts →
	Exact match “Es war Mitte der Siebzigerjahre, als ITGB gegründet wurde.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	NSI Group	Exact match	Aschaffenburg, GermanyHQ recorded Sep 17, 2026	51-200	9 contacts →
	Exact match “Ob Sanierung, Bau, Umbau oder Modernisierung: NSI ist als Generalunternehmer mit fast 30 Jahren Branchenerfahrung deutschlandweit führend.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	H. Maurer Gmbh & Co. KG	Exact match	Schramberg, GermanyHQ recorded Sep 17, 2026	51-200	9 contacts →
	Exact match “Heizung - Klima - Sanitär” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	MNP Ingenieure	Exact match	Lübeck, GermanyHQ recorded Sep 17, 2026	11-50	9 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	Christoffers	Exact match	Delmenhorst, GermanyHQ recorded Sep 17, 2026	51-200	8 contacts →
	Exact match “The technologies available to optimise heating, cooling, ventilation and water management are continually being improved.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase

RevenueBase SmartSearch

Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.

This list uses Exact for “retrofit contractors”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.

Showing 25 of 388 retrofit contractors based in Germany

See the full list, filter by size, metro and specialty, and access 1,068 tracked professional contacts with verified work emails. Direct dials are available where recorded.

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Retrofit contractors based in Germany at a glance

As of Sep 17, 2026

40.7%Verified-email coverage

6.8Average contacts per company

1-10Median size (employees)

7.5%Largest-city concentration · Berlin

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

236

11-50

51-200

5,001-10,000

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 388 companies.

How this list was built

The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
What qualifies: Company records associated with Germany whose business descriptions match “retrofit contractors” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
RevenueBase SmartSearch: Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
Public preview: The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
Match quality: RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
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 displayed company carries at least one verified work email. RevenueBase tracks 1,068 professional contacts with verified work emails across the full matched dataset. 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 17, 2026. Lists refresh periodically as the graph is re-checked.
Record context: Company records and descriptions can change. Check the company's website for its current services and locations.

Frequently asked

What is RevenueBase SmartSearch?

RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “retrofit contractors”; each Exact match badge shows search membership, not an individual similarity or quality score.

How many retrofit contractors are there based in Germany?

RevenueBase identified 388 company matches for retrofit contractors associated with Germany as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.

What is the largest company on this list?

Lindner Group tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.

Which city has the most retrofit contractors?

Berlin leads with 29 company records, followed by Hamburg (21) and Cologne (9).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,068 professional contacts with verified work emails tracked across these 388 companies; direct dials are available where recorded.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 17, 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 SmartSearch, 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.