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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringThörishausgcg GmbH
gcg GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

gcg GmbH plans, installs and maintains building services systems with a focus on heating, climate and ventilation, sanitary installations, district heating, and service and maintenance. The company supports new-build and renovation projects from consulting and planning through to implementation.

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Products & services

Industry:Technical Consulting & EngineeringConstruction & Project Management
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gcg GmbH

Plumbing & Building Services
✓ Offered5
Heating Installations
Heating planning, installation and replacement for new builds and renovations; heat pumps, district heating connections, wood, oil and gas heating, plus heating upgrades and maintenance.
Climate and Ventilation Installations
Climate and ventilation systems for homes and businesses; split and multisplit units, comfort ventilation, duct cleaning, controls, installation and maintenance.
Plumbing Installations
Plumbing installations for new builds, conversions and renovations; bathrooms, boilers and hot water, kitchen and laundry connections, plus repairs and pipework.
District Heating Connections and Network Works
Installation and welding work on district heating networks; new pipeline construction, building connections, transfer stations, maintenance and repairs for low- and high-temperature networks.
Service and Maintenance
Maintenance, fault resolution and repairs for heating, climate, ventilation and plumbing systems; also for equipment from other brands, including maintenance agreements.
Trust & reputation

ranQ Trust Score of gcg 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, Website authority, Media authority

Data basis 50% · As of October 2026

gcg 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%
gcg GmbH scores 50.8 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.25.012%
  • 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%
gcg GmbH scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
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%
gcg GmbH has no value in the Visibility area of the ranQ Trust Score because no data is available. The area carries 8% 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
  • Website authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%

The data basis is 50%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Website authority, Media authority. As of October 2026.

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

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Location

Brunnmattstrasse 15
3174 Thörishaus

At a glance

Legal form
Limited Liability Company
UID
CHE-264.353.703
Founded
2025 · 1 year
Last commercial register change
August 21, 2026
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.
88.0
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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