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40'897 companies found

Widmer Haustechnik

Wohlen Ag · Since 2014

Widmer Haustechnik provides installation, renovation and maintenance services for heating and sanitary systems, including planning, installation and repair work. The company also implements renewable energy solutions such as heat pumps and solar installations.

Plumbing & Building Services

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Widmer Haustechnik AG

Gränichen · Since 2011

Widmer Haustechnik AG is a building services firm specializing in sanitary and heating systems, providing planning, installation and maintenance. Services include new-build and renovation projects, heat pumps, solar systems, boiler descaling and repair/maintenance work.

Plumbing & Building Services

View profile4.9(20)

Wisi Haustechnik AG

Elsau · Since 2021

Wisi Haustechnik AG is a building services company offering sanitary and heating system work as well as repair and maintenance services. Its activities include bathroom and kitchen plumbing, boiler descaling and WC maintenance, planning and installation of heating systems (including heat pumps and solar solutions), pipeline work and certified service for products such as Quooker.

Plumbing & Building Services

View profile4.9(20)

Wohlfahrtsfonds der Lufttechnik AG

Wädenswil · Since 1961

Plumbing & Building Services

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Zac Elec Sàrl

Blonay · Since 2022

The core activity of Zac Elec is to provide services in the field of electrical engineering, including: installation, repair and maintenance of electrical systems; emergency services for power outages, short circuits and repeated shutdowns; installation and maintenance of telecommunications systems, including telephony, data transmission and video transmission; installation of lighting systems, including the selection of lamps, lighting planning and installation of control systems; and installation of charging stations for electric vehicles. The company also offers consulting services to support customers in selecting and installing electrical systems.

Electrical Planning & Installation

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A + B Flachdach AG

Reinach Bl · Since 2005

The core activity of A+B Flachdach AG is the provision of services in the field of flat roofs and sheet metal work. Specifically, this includes the planning, execution and maintenance of flat roofs, including the use of various materials such as bituminous roofing membranes and plastic films. In addition, the company offers pure sheet metal work such as pitched roof sheet metal work, dormer windows, standing seam roofs and metal roofing. Additional services include pigeon protection, lightning protection systems and the assessment of roofs for photovoltaic systems.

RoofingSheet Metal WorkSolar & Photovoltaics

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ackermann AG

Düdingen · Since 1975

ackermann AG is a specialist contractor for building envelopes, building services engineering and solar systems, providing planning, installation and refurbishment services for roofing, façades, plumbing and heating, as well as photovoltaic and solar-thermal systems.

Sheet Metal WorkSolar & Photovoltaics

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Aepli Stahlbau AG

Gossau Sg · Since 1994

The core activity of Aepli Stahlbau AG is steel construction, particularly classic steel construction, hall construction, bridge construction, industrial steel construction and surface coating. The company offers services such as design, manufacturing and assembly of steel structures, surface treatment and painting.

Metal Construction

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Affolter Metall

Gerlafingen · Since 2014

The core activity of Affolter Metall is the manufacture and distribution of metal products, particularly in the field of metal construction, welding, screw foundations, exhaust systems and the production of skewer grills. The company also offers services such as consulting, planning and installation of screw foundations.

Metal Construction

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Aircond SA

Bioggio · Since 2000

The company's core activity is the planning, development and implementation of climate and ventilation systems, including cooling systems, for various sectors such as administration, industry, public institutions, hospitals and residential buildings. The company also provides technical consulting, installation and commissioning of systems, as well as training and refresher courses for customers.

Specialized Construction Installations

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Frequently asked questions

Searching the directory

How the search works, what each filter means, and how the results come together.

What can I search for in the directory?

The search field matches company names, industries and places. Beyond that you can filter by Industry (18 categories based on the NOGA classification), Size (number of employees), Region (canton, language region or postal code) and Special (keywords and entry date). Filters combine freely; the active ones appear as chips below the filter bar and can be removed there individually.

How do keywords work?

Keywords search the description and stated purpose of each company — the text that goes beyond the company name. Multiple keywords are combined with OR: every additional keyword widens the set of matches rather than narrowing it.

What belongs in the postal code field?

A single postal code (e.g. 8000) or a range (e.g. 1000-1010). The field accepts postal codes only — for place names, use Canton or Language region.