6'598 companies found
VorfaSan GmbH
Bottenwil · Since 2016
VorfaSan GmbH manufactures prefabricated PE drainage assemblies, including PE-h and sound-insulated PE-Silent systems for wastewater applications. The company also supplies modular GIS sanitary installation elements for pre-wall constructions, freestanding walls and installation islands.
V-Pro Haustechnik GmbH
Laupen Zh · Since 2022
V-Pro Haustechnik GmbH provides heating, sanitary (plumbing) and electrical installations, along with repair, maintenance and renovation services, and operates a 24‑hour emergency service. Offerings include water treatment, solar systems and building conversion/extension services from planning through implementation.
Vukadin Christian, Sanitär Haustechnik GmbH
Baar · Since 2018
The core activity of Vukadin Christian GmbH is the planning, coordination and execution of sanitary and heating technology projects, including bathroom renovations, new constructions, installations, service work and maintenance of heating and sanitary systems.
Walker A & M Haustechnik AG
Ried-Mörel · Since 2005
Walker Haustechnik is a service provider in the field of building technology and renewable energies. The core activities include: planning and consulting for building technology and renewable energies, installation and service of building technology systems, bathroom renovation and refurbishment, Tele-Butler systems, alternative energies such as photovoltaics and solar systems, and Minergie and passive house technology. The company also offers services such as maintenance and servicing of building technology systems and has experience in the realization of CO2-neutral buildings and solar houses.
Walker + Pestaj AG
Bern · Since 1989
The core activity of Walker & Pestaj AG is the planning, implementation, repair and maintenance of sanitary concepts and systems, including consulting and execution of work in the field of sanitary technology.
Wallimann AG, Sanitäre Anlagen und Spenglerei
Sarnen · Since 1979
The core activity of Wallimann AG is the provision of services in the field of sanitary technology and plumbing, including the planning, installation and maintenance of sanitary facilities, industrial piping, plumbing work, roofing and lightning protection.
Walter Bösch AG
St. Margrethen Sg · Since 1983
The core activity of Walter Bösch AG is the development, manufacture and distribution of air handling units, heating, air conditioning and ventilation solutions, as well as building automation systems. In addition, the company offers comprehensive services such as customer service, maintenance, troubleshooting and renovation consulting.
Walter Klaiber Heiztechnik
Eptingen · Since 1994
The core activity of Walter Klaiber Heiztechnik is the planning, installation and maintenance of heating systems and industrial plants, including chimney renovations, industrial assembly and water softening systems as well as sanitary work.
Wälti & Sohn AG
Langnau Am Albis · Since 2023
Wälti & Sohn AG provides sanitary and heating services, offering maintenance, repairs, renovations and project coordination for private customers. Services include repairs to toilets, taps and radiators, boiler servicing, pipe replacement, as well as consultation, planning and execution coordination for bathroom and heating renovations.
Wandler GmbH
Unterengstringen · Since 2018
The core activity of Wandler GmbH is the provision of services in the field of electrical engineering and automation, particularly the planning, installation and commissioning of electrical systems, HLKS systems and building automation systems.
Wanner Wasser GmbH
Beggingen · Since 2023
Wanner Wasser GmbH provides plumbing and sanitary installation services, maintenance and water treatment solutions, and performs water-main construction, installation inspections and drinking-water sampling.
Wärme24 GmbH
Zurich · Since 2022
Wärme24 GmbH provides planning, installation and maintenance of heating, sanitary and climate systems. Services include consultation, detailed project planning, installations and renovations, as well as regular maintenance and a 24‑hour emergency service.
Wärmepunkt AG
Pfungen · Since 2018
Wärmepunkt AG provides consulting, planning and installation of heating systems, with a focus on renovations and conversions. Its services include heat generation systems such as ground-probe and air-to-water heat pumps, pellet boilers, district heating connections and solar systems, as well as heat distribution solutions like underfloor heating, wall heating and radiators.
Wärmeverbund Schachen AG
Schachen Lu · Since 2016
Wärmeverbund Schachen AG operates a heating plant that supplies heat to residential and school buildings. The system comprises five wood‑chip boilers (330 kW each, 1,650 kW total), four heat storage tanks (5,600 L each), approximately 1,500 m of distribution pipeline and a wood‑chip storage with three 100 m3 chambers; fuel is sourced from regional suppliers.
warm und kalt GmbH
Raron · Since 2022
warm und kalt GmbH provides installation services for heating and air-conditioning systems.
Wasner AG
Uetendorf · Since 1988
The core activity of Wasner AG is the revision, renovation and dismantling of tanks, in particular heating oil tanks, as well as the installation of new tank systems and the performance of maintenance and repair services in the field of tank technology.
Wasserklar Oliver Kaube
Balterswil · Since 2015
The core activity of the company "Wasserklar" is consulting and selling solutions for clean drinking water and health, particularly in the areas of: drinking water analysis and consulting, built-in and tabletop solutions for drinking water filters, hydrogen production and filter systems, lime solutions and treatment, health consulting, individual consulting and health coaching, and sales of drinking water filters, water faucets, carafes, and drinking glasses. The company also offers lectures and workshops on topics such as health and drinking water.
Wassertechnik Studer GmbH
Breitenbach · Since 2011
The core activity of Wassertechnik Studer GmbH is the provision of plumbing and sanitary services, as well as the sale, installation and maintenance of water softening systems for single-family and multi-family homes.
Wasserwerker GmbH
Bremgarten B. Bern · Since 2020
Wasserwerker GmbH is a small plumbing company focused on maintenance and repair services for sanitary installations. Services include boiler descaling, drain unclogging, bathroom and kitchen renovations, general repair work and a dealer partnership with Soda Fresh.
WATER4ME, H. Halter
Bremgarten Ag · Since 2020
The core activity of Water4me is the purification and activation of water through various processes, such as reverse osmosis systems, as well as consulting, installation and maintenance of water treatment plants for various applications such as households, real estate, agriculture and industry.
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Source: Federal Statistical Office, UID register