Plumbing & Building Services in Au SG

Companies

All 12 companies in Au SG

Heeb AG Heizungsservice

Since 1979

Heating consulting, installation, service and repairSolar thermal and photovoltaicsSanitary installations

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HWT Haus- und Wassertechnik AG

Since 1987

Sanitary installationsBathroom conversionsHeating

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Intemann AG

Since 1988

Sanitary installationsVentilation technologyBathroom planning

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INHAUS AG

Since 2001

Bathroom solutionsConsultation

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ETA Installationstechnik GmbH

Since 2014

Sanitary installationsHeating installationsVentilation installations

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GWT Gebäude- und Wassertechnik GmbH

Since 2015

Sanitary engineeringHeating systemsConsulting

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BNL Haustechnik GmbH

Since 2019

PlumbingHeatingPipeline construction

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MBM Sanitärtechnik Swiss GmbH

Since 2021

Sanitary productsSanitary technology for installers

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sanitärplan.ch GmbH

Since 2012

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Peter Huggler GmbH

Since 2026

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ZG

Zekic Gebäudetechnik

Since 2020

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EH

EWT Haustechnik GmbH

Since 2022

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Plumbing & Building Services in Au SG

12Plumbing & Building ServicesCommercial register (Zefix) · as of September 26, 2026

2015Median year of registrationCommercial register (Zefix) · as of September 26, 2026

529in the Canton of St. GallenCommercial register (Zefix) · as of September 26, 2026

8,047in SwitzerlandCommercial register (Zefix) · as of September 26, 2026

Locations

Plumbing & Building Services in the region

Point size by number of companies per place.

Source: commercial register (Zefix) · as of September 26, 2026

Largest places

St. Gallen68 Jona19 Buchs SG18 Wil SG18 Gossau SG14 St. Margrethen SG13 Flawil13 Altstätten SG10 Wittenbach10 Oberuzwil10

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Place axis

Other industries in Au SG

All companies in Au SG

Holding Companies25 Property Management19 Management Consulting17 Real Estate Project Development17 IT Consulting & Services15 Restaurants14 Facility Management & Cleaning13 Automotive & Vehicle Trade13 Wholesale - General Specialty Trade13 Beauty Salons12 Real Estate Brokerage12 Auto Repair Shops12 Wholesale - Machinery & Technical Equipment12 Technical Consulting & Engineering11 Construction & Project Management11 Mechanical Engineering Industry10 Advertising Agencies10 Trade Fair & Event Organizers9 Interior Construction9 Metal Construction9 Fiduciary Offices9 General Contractors8 Other Service Industries7 Repair of Machinery & Electronic Devices7 Building Maintenance7 Painting & Plastering7 Wellness & SPA Facilities7 Online Shops7 Catering7 Specialized Construction Installations6 Food Processing6 Metal Industry6 Software Development6 Retail - General Specialty Trade6 Logistics & Transport Companies6 Flooring & Tiling5 Financial Services5 Printing Companies5 Public Relations Consulting5 Retail - Food & Luxury Items5 Retail - Machinery & Technical Equipment5 Fitness Centers5

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Plumbing & Building Services inAu SG

All 12 companies in Au SG

Plumbing & Building Services in the region

Plumbing & Building Services in other places

Other industries in Au SG

Plumbing & Building Services in
Au SG