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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSpecialized Construction ActivitiesAu SgGWT Gebäude- und Wassertechnik GmbH
GWT Gebäude- und Wassertechnik GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

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.

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Offering

Products & services

Industry:Specialized Construction ActivitiesPlumbing & Building Services
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GWT Gebäude- und Wassertechnik GmbH

✓ Offered4
Sanitary engineering
Sanitary engineering for new builds, conversions and renovations; planning, coordination of heating, electrical, plastering, tiling and masonry work as well as complete sanitary installations.
Heating systems
Heating systems with heat pumps, natural gas, oil or wood-fired heating; solar support, boiler replacements, radiators, underfloor and ceiling heating, including installation, project management and maintenance.
Consulting
Consulting for efficient energy management and tailor-made solutions considering requirements; with regular maintenance as well as use of reputable brands and safe systems.
24-hour emergency assistance
24-hour emergency assistance for faults in drains, water or heating, also in the evening, on weekends and public holidays.
Trust & reputation

ranQ Trust Score of GWT Gebäude- und Wassertechnik GmbH

Trust Score

No score yet

x

A published score requires a data basis of at least 50% and data from at least two criteria groups other than identity. Missing evidence: Review quality, Review volume, Review recency, Media authority

Data basis 54% · As of October 2026

GWT Gebäude- und Wassertechnik GmbH has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
GWT Gebäude- und Wassertechnik GmbH scores 78.5 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.89.612%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
GWT Gebäude- und Wassertechnik GmbH scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).85.022%
GWT Gebäude- und Wassertechnik GmbH scores 0.0 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%

The data basis is 54%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Media authority. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Knowledge

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Location

Hauptstrasse 31
9434 Au Sg
Opening hours
Mon
07:00 - 17:00
Tue
07:00 - 17:00
Wed
07:00 - 17:00
Thu
07:00 - 17:00
Fri
07:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-299.476.401
Founded
2015 · 11 years
Last commercial register change
April 8, 2022
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.88.06%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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