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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureGeneral ContractorsDübendorfHS3 Group AG
HS3 Group AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of HS3 Group AG is the provision of comprehensive services in the fields of building technology and energy consulting. This includes in particular the planning, installation and maintenance of heating, ventilation, air conditioning and sanitary systems, as well as consulting and planning in the areas of energy efficiency and environmental protection.

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Products & services

Industry:General Contractors
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HS3 Group AG

Electrical Planning & Installation
Plumbing & Building Services
✓ Offered6
Management holding
Management holding with services for subsidiaries in administration, accounting and controlling, as well as coordinating support for the group of companies.
Energy consulting, planning and studies for building services (HLKS)
Energy consulting with comparative variant analyses of energy solutions, planning of HLKS systems, studies, and measurements and inspections such as heat consumption metering and legionella tests.
Turnkey project delivery and site management for heating replacement, photovoltaics and charging infrastructure
Turnkey delivery of systems for heating, photovoltaics and e-mobility, from consulting through planning and execution to commissioning, including coordination and site management.
Heating, ventilation and air-conditioning installations
Execution of heating, ventilation and air-conditioning installations, as well as service work for operation of the systems.
Electrical installations
Electrical installation work, classic installation and service tasks, as well as electrical work for photovoltaic systems and charging infrastructures for electric cars.
Electrical inspections of electrical installations
Periodic electrical inspections, electrical inspections in the event of change of ownership, and further measurements related to electrical safety as an independent inspection body.
Trust & reputation

ranQ Trust Score of HS3 Group AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

HS3 Group 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.
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%
HS3 Group AG scores 81.6 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.75.012%
  • 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.82.07%
HS3 Group AG 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%
HS3 Group AG scores 37.1 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 35.37.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

HS3 Group 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.

Knowledge

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Location

Zürichstrasse 45
8600 Dübendorf

At a glance

Legal form
Corporation
UID
CHE-144.987.264
Founded
2019 · 7 years
Last commercial register change
January 23, 2026
Employees
21 to 50
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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