Crafts & Trades

HMA Interior GmbH 

Dietlikon · Since 2022

The core activity of HMA Interior GmbH is the planning, design and realization of individual kitchen solutions, including design, consulting, installation and renovation of kitchens.

Josef Wey AG 

Rothenburg · Since 1982

The core activity of Josef Wey AG is the execution of plumbing and façade construction work, including new installations, renovations, refurbishments and repairs. The company offers high-quality services in this field and specializes in the processing of materials for building envelopes, particularly for ventilated façades.

Käslin Chauffage SA 

Corcelles Ne · Since 2018

Käslin Chauffage SA specializes in boiler‑room remediation and cooling installations. It provides design, installation and renovation of heat production systems (gas, oil, pellet boilers, air‑to‑water and geothermal heat pumps), heating distribution and ventilation, emergency and maintenance services including mobile boilers and temporary water heaters, and engineering services such as technical plans, bids and project supervision.

Käslin Sanitaire SA 

Corcelles Ne · Since 2018

Käslin SA is a service company specializing in the fields of sanitation, heating, roofing and energy. The core activities include: installation, maintenance, repair and modernization of sanitary facilities, heating systems, roof structures and energy systems; project planning, execution and supervision in the field of technical equipment for buildings and infrastructure; consulting and expertise in the fields of sanitation, heating, roofing and energy; and 24/7 emergency service for urgent repairs and interventions. The company thus offers a wide range of services tailored to the needs of building owners, managers and users.

Kilian Friederich GmbH 

Schafisheim · Since 2001

The core activity of Kilian Friederich GmbH is the construction and renovation of roofs and facades, including the refurbishment and renovation of building envelopes.

kolb+walther AG 

Grindelwald · Since 2017

kolb+walther AG is a building‑services company providing plumbing, heating and sheet‑metal roofing services and supplying profile metal sheets and sandwich panels. The company also offers repair and maintenance services, operates a 24‑hour emergency service and serves as a training and continuing‑education employer.

kolb+walther AG, Zweigniederlassung Mürren 

Mürren · Since 2021

kolb+walther AG, Zweigniederlassung Mürren provides building-services work, including sanitary/plumbing installations, heating systems and metal-roofing (spenglerei). The branch also supplies profiled metal sheets and sandwich panels and offers repair, maintenance and a 24-hour emergency service.

Koller Metallbautechnik GmbH 

Dänikon Zh · Since 2011

The company's core activity is metal construction, particularly the manufacture and processing of metal products such as glass facades, windows, doors, as well as the provision of service and maintenance services in this field. This also includes specialized services such as sheet metal processing and welding work.

Kull Elektro AG 

Birmensdorf Zh · Since 2004

Kull Elektro AG is a provider of electrical installations offering building electrical and smart‑building solutions as well as service and maintenance. Its services include power and low‑voltage systems, building automation, security and communication systems, and traffic engineering such as copper and fiber networks, tunnel sensors and signalling.

Kull Elektro AG, Zweigniederlassung Friedlisberg 

Rudolfstetten · Since 2008

Kull Elektro AG, Zweigniederlassung Friedlisberg provides electrical installation services including design, installation and maintenance of power and low-voltage systems. Its services cover building technology and smart-building solutions, service and maintenance, traffic engineering (BSA) and fiber and copper network works.