Heating installer in
Au SG

7 companies in Heating installer based in Au SG — name and year of registration from the commercial register. The list below shows them all.

Companies

All 7 companies in Au SG

Heeb AG Heizungsservice Logo

Heeb AG Heizungsservice

Since 1979 · 1–10 empl.5.0(24)

Heeb AG Heizungsservice plans, installs and maintains heating, plumbing, climate-control and energy systems. Its services include heat pumps, conventional heating, solar thermal systems and photovoltaics, as well as advice, repairs and emergency service.

Heating installerHeating consulting, installation, service and repairSolar thermal and photovoltaicsSanitary installations
ranQ Trust Score 4.5 out of 5.0, rated Excellent, Rank #1
HWT Haus- und Wassertechnik AG Logo

HWT Haus- und Wassertechnik AG

Since 1987 · 11–20 empl.

HWT Haus- und Wassertechnik AG plans and installs building-services systems, including plumbing, heating and ventilation, and carries out bathroom renovations and swimming-pool construction. Its activities also include pipeline and plastic tank construction, technical planning, maintenance and repairs.

Heating installerSanitary installationsBathroom conversionsHeating
ranQ Trust Score 4.1 out of 5.0, rated High, Rank #2
BNL Haustechnik GmbH Logo

BNL Haustechnik GmbH

Since 2019 · 1–10 empl.

BNL Haustechnik GmbH provides plumbing, heating, pipeline construction and building technology services. Its activities also include maintenance, renovations, consulting and planning.

Heating installerPlumbingHeatingPipeline construction
ranQ Trust Score 4.0 out of 5.0, rated High, Rank #3
ETA Installationstechnik GmbH Logo

ETA Installationstechnik GmbH

Since 2014 · 1–10 empl.5.0(2)

ETA Installationstechnik GmbH plans, installs and maintains building-services systems for plumbing, heating, ventilation and solar energy. Its services include consulting and installation planning for new builds and renovations, as well as maintenance and servicing.

Air conditioningSanitary installationsHeating installationsVentilation installations
ranQ Trust Score 3.9 out of 5.0, rated High, Rank #4
NG Gebäudetechnik Nue Gashi Logo

NG Gebäudetechnik Nue Gashi

Since 2019 · 1–10 empl.2.7(3)

NG Gebäudetechnik Nue Gashi provides facility services in plumbing, heating, cleaning and core drilling.

Heating installerSanitary plumbingHeatingCleaning
ranQ Trust Score 3.6 out of 5.0, rated Solid, Rank #5
GWT Gebäude- und Wassertechnik GmbH Logo

GWT Gebäude- und Wassertechnik GmbH

Since 2015 · 1–10 empl.

GWT Gebäude- und Wassertechnik GmbH provides building services in plumbing and heating. Its work includes planning and installing plumbing systems, heating systems, heat pumps and solar installations, as well as round-the-clock emergency service.

Heating installerSanitary engineeringHeating systemsConsulting
No score yet
EH

EWT Haustechnik GmbH

Since 2022 · 1–10 empl.

Heating installer
No score yet

Heating installer in Au SG

7Heating installerCommercial register (Zefix) · as of November 15, 2026
2015Median year of registrationCommercial register (Zefix) · as of November 15, 2026
299in the Canton of St. GallenCommercial register (Zefix) · as of November 15, 2026
5,147in SwitzerlandCommercial register (Zefix) · as of November 15, 2026
Locations

Heating installer in the region

Point size by number of companies per place.

Source: commercial register (Zefix) · as of November 15, 2026