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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringLausanneAmstein + Walthert Lausanne SA
Amstein + Walthert Lausanne SA Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Amstein + Walthert Lausanne SA provides technical engineering and consulting services for building systems, including heating, ventilation, refrigeration, plumbing, electrical systems, safety/security, building automation, interdisciplinary coordination and technical site management.

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Offering

Products & services

Industry:Technical Consulting & Engineering
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Amstein + Walthert Lausanne SA

✓ Offered3
Building Services Engineering
Planning and design of heating, air conditioning, ventilation, refrigeration, plumbing, special fluids, electrical systems, safety/security and building automation, including BIM coordination and technical site supervision.
Sustainable Building Consulting
Consulting on building physics, acoustics, environmental labels and certifications, fire protection, project management support, technical and energy audits, energy controlling and contracting.
BIM and Interdisciplinary Coordination
Interdisciplinary coordination of technical systems and spatial planning using BIM methods, plus coordination between disciplines and technical site management.
Trust & reputation

ranQ Trust Score of Amstein + Walthert Lausanne SA: 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.

Amstein + Walthert Lausanne SA 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%
Amstein + Walthert Lausanne SA scores 94.3 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.90.07%
Amstein + Walthert Lausanne SA 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%
Amstein + Walthert Lausanne SA scores 100.0 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 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Amstein + Walthert Lausanne SA 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

Avenue d'Ouchy 52
1006 Lausanne

At a glance

Legal form
Corporation
UID
CHE-107.035.000
Founded
1971 · 55 years
Last commercial register change
August 26, 2026
Employees
51 to 100
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.100.06%
  • 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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