Plumbing & Building Services

GTI Solutions GmbH 

Bern · Since 2022

GT Planung GmbH 

Neuhausen Am Rheinfall · Since 2017

The company's core activity is the planning and consulting of building technology, particularly in the areas of: heating systems, comfort ventilation systems, air conditioning systems, energy consulting and planning, building energy certificates, renovation concepts, construction supervision and quality assurance. The company offers comprehensive services for the planning, implementation and management of building technology, with the goal of developing energy-efficient and sustainable solutions for its customers.

Gunziger AG 

Leuzigen · Since 2002

Gunziger AG provides plumbing, heating, cooling and ventilation services, and carries out core drilling, solar and heat-pump installations as well as maintenance and repairs.

Gut AG 

Rothenburg · Since 2004

Gut AG is a building services company that provides heating, ventilation, air conditioning and sanitary system services. Its offerings include planning and installation, heating system renovation, bathroom conversions, maintenance, customer service and energy consulting.

Gut AG 

Schenkon · Since 1999

Gut AG is a building‑services company offering heating, ventilation, air‑conditioning and sanitary systems. It provides consulting, planning, installation and maintenance services, including renovation work and a 365‑day customer service.

Gut AG 

Ermensee · Since 2017

Gut AG is a building services company offering heating, ventilation, air-conditioning and sanitary systems. The company provides consulting, planning, installation and maintenance services, including bathroom renovations, heating system renovation, energy advice and customer service/maintenance.

Gut AG 

Willisau · Since 2022

Gut AG is a building services engineering company that plans, installs and maintains heating, ventilation, air conditioning and sanitary systems. Its services include bathroom renovation, heating system refurbishment, maintenance, customer service and energy consulting.

GVA Building Sàrl 

Vésenaz · Since 2020

The core activity of GVA Building is the planning, installation, maintenance and renovation of heating, ventilation and air conditioning systems (CVC) as well as the implementation of energy-efficient and environmentally friendly solutions to meet the needs of private and business customers in the Geneva region.

GWT Gebäude- und Wassertechnik GmbH 

Au Sg · Since 2015

The company provides services in the field of heating and plumbing, particularly consulting, planning, installation and maintenance of heating systems such as heat pumps, gas, oil and wood heating systems, solar systems, underfloor and radiator heating systems.

H2O-Plan GmbH 

Sevelen · Since 2019

The core activity of H2O-Plan GmbH is the planning of sanitary and heating systems for Switzerland and Liechtenstein. The company offers innovative, efficient and cost-effective solutions for the strategic planning, operation and maintenance of sanitary and heating systems.

Häberlin Engineering GmbH 

St. Gallen · Since 2017

Häberlin Engineering GmbH is a building services engineering firm providing planning and project management for heating, ventilation, air conditioning and sanitary systems (HVAC/S) and sprinkler installations. Services include feasibility studies, expert reports, condition analyses, operational optimizations, measurement concepts, specialist site supervision and coordination, plus energy solutions such as renewable systems, heat recovery, energy certificates (Minergie) and thermography.

Hafner Haustech AG 

Sursee · Since 2001

Hager Donzé Sàrl 

Renan Be · Since 2011

The core activity of Hager Donzé Sàrl is the provision of services in the field of building technology, particularly in the following areas: Heating: installation, maintenance and repair of heating systems, including oil, gas, wood and pellet heating, heat pumps and solar systems. Plumbing: installation, maintenance and repair of sanitary facilities, including water softening, bathroom renovation and installation of hot water tanks. Roofing: roofing work, including roof sealing, roofing with fine sheet metal and lightning protection. The company also offers emergency services and operates in the regions of Franches-Montagnes, Montagnes Neuchâteloise and Jura-Bernois.

hägler express sanitär gmbh 

Oberwil Bl · Since 2005

The core activity of Hägler Express Sanitär GmbH is the planning, installation, maintenance and repair of sanitary facilities, particularly the design of modern bathrooms and shower rooms, as well as the performance of service, revision and repair work on sanitary facilities.

Hälg & Co. AG 

St. Gallen · Since 1981

Hälg & Co. AG is a corporate group for building services engineering and integrated facility management. Its services include design, installation, maintenance and refurbishment of building services systems, covering plant engineering, building automation, service, ventilation cleaning and integrated property management.

Hälg & Co. AG, succursale de Plan-les-Ouates 

Plan-Les-Ouates · Since 2010

Hälg & Co. AG, succursale de Plan-les-Ouates is a branch of Hälg Group providing building services including installation and commissioning of heating, cooling, ventilation and sanitary systems, building automation, after‑sales maintenance, ventilation‑system cleaning and integral facility management.

Hälg & Co. AG, Zweigniederlassung Arosa 

Arosa · Since 2024

Hälg & Co. AG, Zweigniederlassung Arosa provides plant construction and service for building services engineering. Its services include planning, installation, maintenance and renovation of heating/cooling, ventilation/air-conditioning and sanitary systems for residential, commercial and industrial buildings.

Hälg & Co. AG, Zweigniederlassung Aarau 

Aarau · Since 2009

Hälg & Co. AG, Zweigniederlassung Aarau is a branch of the Hälg Group providing building services engineering and service work. The branch offers planning, installation, maintenance and renovation of heating, cooling, ventilation and sanitary systems, as well as related service and industrial solutions.

Hälg & Co. AG, Zweigniederlassung Basel 

Basel · Since 2023

Hälg & Co. AG, Zweigniederlassung Basel is a branch of the Hälg Group providing building automation and related planning and service activities. The group’s services include installation engineering, maintenance, ventilation cleaning and integrated facility management.

Hälg & Co. AG, Zweigniederlassung Chur 

Chur · Since 2009

Hälg & Co. AG, Zweigniederlassung Chur provides building services engineering including system installation, maintenance and service for heating/cooling, ventilation/air conditioning and sanitary systems, and offers building automation and ventilation cleaning.