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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryEnergy & EnvironmentSustainability SectorWallisellenGTB Erdsondenbohrungen AG
GTB Erdsondenbohrungen AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of GTB Erdsondenbohrungen AG is the execution of ground source boreholes for the utilization of geothermal energy, particularly for the installation of ground source heat exchangers (GSHE) to extract heat from the ground. The company thus offers an environmentally friendly and sustainable solution for heating buildings.

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Products & services

Industry:Sustainability Sector
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GTB Erdsondenbohrungen AG

✓ Offered4
Planning of geothermal boreholes
Consulting, feasibility studies, geological investigations, sizing, simulations, tenders, specialist and project planning as well as obtaining permits and coordinating authorities.
Deep drilling for geothermal boreholes
Preparing borehole locations, probing, crane work, deep drilling for established borehole systems up to 500 m, flow and pressure tests, backfill measurements and borehole profiles.
Building connection for geothermal boreholes
Laying and welding connection pipes, installing manifold and distribution systems, flushing brine fluids, sealing penetrations and decommissioning defective borehole systems.
Civil engineering works
Civil engineering works, trench excavation, tree felling, core drilling, press drilling, earth rockets as well as terrain restoration, paving works, surfacing works, fence assembly and end cleaning.
Trust & reputation

ranQ Trust Score of GTB Erdsondenbohrungen AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

GTB Erdsondenbohrungen AG 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.
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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%
GTB Erdsondenbohrungen AG scores 84.8 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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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.70.07%
GTB Erdsondenbohrungen AG scores 83.3 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).83.322%
GTB Erdsondenbohrungen AG scores 31.4 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.31.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

GTB Erdsondenbohrungen AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of October 2026.

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

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Location

Gewerbehallenstrasse 4
8304 Wallisellen

At a glance

Legal form
Corporation
UID
CHE-219.916.267
Founded
2015 · 11 years
Last commercial register change
May 8, 2025
Employees
11 to 20
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.
100.0
6%
  • 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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