Air conditioning in
St. Gallen

TCA Thermoclima AG

Since 1975 · 51–100 empl.·4.1(21)

TCA Thermoclima AG distributes air-conditioning and heat-pump systems, as well as chilled-water and commercial refrigeration equipment. Its range also includes ventilation systems and services such as commissioning, maintenance, repairs and spare parts.

Hälg & Co. AG

Since 1981 · 101–500 empl.

Hälg & Co. AG plans, installs and maintains building services systems. Its services include heating, cooling, ventilation and air-conditioning systems, as well as building automation, maintenance, renovations and ventilation cleaning.

Fh Kältetechnik AG

Since 2017 · 1–10 empl.

Fh Kältetechnik AG maintains, services and repairs refrigeration and air-conditioning systems, as well as energy and heat-pump equipment, and sells and installs this equipment. It is also a sales and service partner for professional ILSA refrigeration equipment.

E3 HLK AG

Since 2010 · 21–50 empl.·5.0(6)

E3 HLK AG plans and installs heating, ventilation and cooling systems for buildings. Its services also include maintenance, repairs, operational optimisation, conversions and renovations.

H. Fatzer AG, Heizung-Lüftung-Sanitär

Since 1972 · 1–10 empl.·3.8(15)

H. Fatzer AG, Heizung-Lüftung-Sanitär plans, installs, renovates and repairs heating, ventilation and plumbing systems. Its services also include maintenance and servicing, with solutions for heating systems, controlled ventilation, water and wastewater installations, and hot-water preparation.

Klima Komfort GmbH

Since 2020 · 1–10 empl.·4.4(7)

Klima Komfort GmbH plans and installs ventilation and air-conditioning systems for industry, businesses, restaurants, offices and homes. Its services also include maintenance and hygiene, mobile dehumidification and other building-services work.

Gebrüder Zotti GmbH

Since 1995 · 1–10 empl.·5.0(3)

Gebrüder Zotti GmbH plans, installs and maintains heating and air-conditioning systems, as well as ventilation and solar systems. Its services include advice on heating, ventilation and solar technology and solutions for heating and indoor air.

TechInstall GmbH

Since 2021 · 1–10 empl.

TechInstall GmbH plans and installs heating, plumbing, refrigeration and ventilation systems for residential, commercial and industrial buildings. It also provides servicing, repairs and maintenance for these systems.

VRA Haustechnik GmbH

Since 2025 · 1–10 empl.

VRA Haustechnik GmbH plans and installs heating systems and provides repairs, maintenance and servicing for heating systems, heat pumps and air-conditioning systems. Its services also include maintenance work on sanitary installations.

Burkart & Co. Bau- u. Industriemontagen

Since 1988 · 1–10 empl.

MLM - Migi Lüftungen & Montage GmbH

Since 2013 · 1–10 empl.

BSL Montagen GmbH

Since 2015 · 1–10 empl.