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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesVillars-Sur-GlâneDuchein S.A.
Duchein S.A. Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of duchein is the provision of technical services in the field of sanitary technology and construction, particularly in the areas of planning, design and implementation of sanitary facilities, pools and other construction projects.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered7
Sanitary technical studies
Comprehensive engineering services for sanitary installations, sprinkler and pool technology, from preliminary design to final handover of the property.
Technical construction management
Technical construction management, coordination of the execution phases, general and detailed plans, diagrams of principle, plans for penetrations and embedded items.
Analyses and comparisons for tenders
Tender calls with analyses and comparisons; preparation of the project with an overall quotation and the preliminary design with an estimated budget.
CVSE and BIM coordination
Coordination of the CVSE disciplines, management of technical interfaces, elimination of conflicts and integration of regulatory requirements, with BIM modelling.
Fire protection and sprinkler systems
Fire protection, sprinkler and deluge installations, integrated into sanitary technical studies and specialized engineering services.
Water and energy technology
Recovery of renewable energies, treatment of potable, industrial and radioactive water, transport of industrial and medical gases, production of brine.
Pool technology
Engineering studies and services for pool technology, integrated into the sanitary installations and the client’s specific needs.
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4.0/5

Duchein S.A.

Trust & reputation

ranQ Trust Score of Duchein S.A.: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Duchein S.A. scores 58.4 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.56.824%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.52.910%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.70.08%
Duchein S.A. scores 87.1 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.100.012%
  • 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%
Duchein S.A. scores 85.0 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).85.022%
Duchein S.A. scores 25.7 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 35.25.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Duchein S.A. reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 3.9 out of 5 stars from 7 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
3.9
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle3.97
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Route de la Glâne 107
1752 Villars-Sur-Glâne

At a glance

Legal form
Corporation
UID
CHE-100.441.534
Founded
1988 · 38 years
Last commercial register change
August 19, 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.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.85.03%
    • Full methodology

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