Company lists · Data refreshed September 2026

Top 25 Retrofit contractors based in Switzerland

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

Compiled by the RevenueBase Data Team Data refreshed Sep 17, 2026 123 companies tracked

RevenueBase identified 123 company matches for retrofit contractors associated with Switzerland as of September 2026 and tracks 786 professional contacts across them, including 330 with verified work emails. Geneva is the largest hub.

This list covers company matches for retrofit contractors associated with Switzerland, 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

123Companies

786Contacts tracked

330Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest retrofit contractors based in Switzerland

Ranked by team size

Top 25 of 123 company matches for retrofit contractors based in Switzerland, 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	GLB Genossenschaft	Exact match	Langnau, SwitzerlandHQ recorded Sep 17, 2026	501-1,000	142 contacts →
	Exact match “GLB ist die verlässliche Partnerin für Lebensräume – Die Expertin für energieeffiziente Sanierung, Neubau, Einfamilien- oder Mehrfamilienhaus, Gewerbe- oder Industriebau…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
2	Tech Building	Exact match	Perly - Genève, SwitzerlandHQ recorded Sep 17, 2026	51-200	82 contacts →
	Exact match “Acteur de référence depuis plus de 25 ans à Genève, TECH BUILDING est une entreprise dont le cœur de métier repose sur la réalisation d’infrastructures énergétiques du bâtiment et…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
3	Roth Gruppe AG	Exact match	4563, SwitzerlandHQ recorded Sep 17, 2026	201-500	52 contacts →
	Exact match “ROTH GRUPPE – Isolationen.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
4	Services Plus Energies SA	Exact match	Bernex, SwitzerlandHQ recorded Sep 17, 2026	51-200	31 contacts →
	Exact match “Depuis 15 ans à votre service, Services Plus Energies est une entreprise spécialisée en Chauffage, Ventilation et Climatisation.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
5	Muller Energies	Exact match	Meinier, SwitzerlandHQ recorded Sep 17, 2026	51-200	26 contacts →
	Exact match “Muller Energies SA est votre spécialiste dans la maintenance et l’optimisation énergétique de vos installations de chauffage, ventilation, et climatisation.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
6	Coutaz SA	Exact match	St-maurice, SwitzerlandHQ recorded Sep 17, 2026	51-200	23 contacts →
	Exact match “Fondée en 1946 à St-Maurice, Coutaz SA est une entreprise pionnière dans les techniques du bâtiment.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
7	Guggisberg Dach Fassade Energie	Exact match	Wabern, SwitzerlandHQ recorded Sep 17, 2026	51-200	21 contacts →
	Exact match “Guggisberg ist der Berner Spezialist für Gebäudehülle und energetische Sanierungen.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
8	SB Technique SA	Exact match	Geneva, SwitzerlandHQ recorded Sep 17, 2026	11-50	18 contacts →
	Exact match “SB technique est un bureau d'Ingénieur Conseil en chauffage, ventilation, climatisation et sécurité du bâtiment développant des concepts énergétiques ambitieux pour des…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
9	Guggisberg Kurz AG	Exact match	Ostermundigen, SwitzerlandHQ recorded Sep 17, 2026	51-200	18 contacts →
	Exact match “Mit über 90 erfahrene Mitarbeitenden ist die Guggisberg Kurz AG in der Lage sowohl grosse Objekte auszuführen, als auch sehr flexibel zu agieren.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
10	PIC Energies SA	Exact match	Geneva, SwitzerlandHQ recorded Sep 17, 2026	11-50	15 contacts →
	Exact match “Le bureau est actif dans les domaines de l’énergétique des bâtiments, du chauffage, de la ventilation, de la climatisation et du sanitaire.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
11	Home Intelligence Sàrl	Exact match	Lonay, SwitzerlandHQ recorded Sep 17, 2026	11-50	14 contacts →
	Exact match “Spécialiste en optimisation énergétique!” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
12	Schmid Amrhein AG	Exact match	Luzern, SwitzerlandHQ recorded Sep 17, 2026	51-200	13 contacts →
	Exact match “Unsere Wurzeln reichen zurück bis ins Jahr 1947 – doch unser Blick ist klar auf die Zukunft gerichtet.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
13	M-Entreprise Générale	Exact match	Collombey, SwitzerlandHQ recorded Sep 17, 2026	11-50	12 contacts →
	Exact match “20 ans \|+ appartements rénovés M-Entreprise Générale excelle dans la rénovation en milieu habité, visant à valoriser chaque immeuble avec des solutions clés en main.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
14	Elektro 24 AG	Exact match	Zürich, SwitzerlandHQ recorded Sep 17, 2026	11-50	11 contacts →
	Exact match “Egal ob Neubau, Umbau oder Sanierung: Wir sorgen für Strom an den richtigen Stellen.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
15	Neukom Marzolo AG	Exact match	Rafz, SwitzerlandHQ recorded Sep 17, 2026	11-50	10 contacts →
	Exact match “Die Neukom Marzolo AG mit Sitz in Rafz und Uster ist Ihr kompetenter Partner für innovative, ökonomische und ökologische Lösungen in der Gebäudetechnik.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
16	ADR	Exact match	Fontaines, SwitzerlandHQ recorded Sep 17, 2026	51-200	8 contacts →
	Exact match “ADR vous propose un panel de services complémentaires afin de répondre de manière intégrale, fiable et efficiente aux besoins de la clientèle.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
17	Elfero AG	Exact match	Meisterschwanden, SwitzerlandHQ recorded Sep 17, 2026	11-50	7 contacts →
	Exact match “elfero AG is a renewables & environment company based out of Lindenmattstrasse 9, Meisterschwanden, Canton of Aargau, Switzerland.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
18	Effin'art Sàrl	Exact match	Biel, SwitzerlandHQ recorded Sep 17, 2026	11-50	7 contacts →
	Exact match “Effin'Art Sàrl est active dans le domaine de l'énergétique des bâtiments et l'architecture durable.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
19	Valcalorie SA	Exact match	Sion, SwitzerlandHQ recorded Sep 17, 2026	1-10	7 contacts →
	Exact match Recorded description not available. Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
20	Haustechnik	Exact match	Staas, SwitzerlandHQ recorded Sep 17, 2026	11-50	6 contacts →
	Exact match “Wir sind ein dynamisches Unternehmen, das sich auf die Bereitstellung erstklassiger Haustechniklösungen spezialisiert hat.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
21	Energy Group AG	Exact match	Rotkreuz, SwitzerlandHQ recorded Sep 17, 2026	11-50	6 contacts →
	Exact match “Auf dem Weg zur Nachhaltigkeit: Unsere Sustainable Building Solutions sichern Wirtschaftlichkeit und CO2-Neutralität- Dekarbonisierung - Energetische Areal- und…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
22	Ponzio Engineering SA	Exact match	Thierrens, SwitzerlandHQ recorded Sep 17, 2026	1-10	6 contacts →
	Exact match “Ponzio Engineering est une entreprise familiale créée en 1970.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
23	Ecoenergy Swiss AG	Exact match	Volketswil, SwitzerlandHQ recorded Sep 17, 2026	1-10	6 contacts →
	Exact match “Ob Sie nun auf erneuerbare Energien umsteigen, Ihre Öl- oder Gasheizung durch eine moderne, energieeffiziente Anlage ersetzen oder den Wirkungsgrad Ihrer bestehenden Heizung…” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
24	Servicetech Gmbh	Exact match	Röthenbach, SwitzerlandHQ recorded Sep 17, 2026	1-10	5 contacts →
	Exact match “Die ServiceTech GmbH ist ein Fachunternehmen für Haustechnik und Energielösungen mit Sitz in Röthenbach bei Herzogenbuchsee.” Recorded in the RevenueBase company graph · Sep 17, 2026 · View company records in RevenueBase
25	URS Haller AG	Exact match	Aesch, SwitzerlandHQ recorded Sep 17, 2026	11-50	4 contacts →
	Exact match “Ihre Fassade oder ihr Wohnraum ist in die Jahre gekommen, Ihre Wände sind kalt und haben Risse oder es fehlt ein Zimmer durch ein neues Lebensereignis.” 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 123 retrofit contractors based in Switzerland

See the full list, filter by size, metro and specialty, and access 330 tracked professional contacts with verified work emails. Direct dials are available where recorded.

Free signup · no credit card

View the full list →

Retrofit contractors based in Switzerland at a glance

As of Sep 17, 2026

42.0%Verified-email coverage

6.4Average contacts per company

1-10Median size (employees)

4.9%Largest-city concentration · Geneva

Sep 17, 2026Page data refreshed

Companies by employee count

1-10

11-50

51-200

201-500

501-1,000

Email recency for this list is measured worldwide rather than for Switzerland, so it is reported there. Company counts and contact totals on this page are exact for Switzerland, over 123 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 Switzerland 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 330 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 Switzerland?

RevenueBase identified 123 company matches for retrofit contractors associated with Switzerland 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?

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

Which city has the most retrofit contractors?

Geneva leads with 6 company records, followed by Zurich (5) and Neuchatel (3).

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 330 professional contacts with verified work emails tracked across these 123 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.

Ready to reach these companies? Verified emails and direct dials for all 123 retrofit contractors based in Switzerland. Start with a free account, no credit card.

Download this list →

Related lists

Retrofit contractors by geography

Browse the directory

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.