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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringWidnauschmidheiny engineering AG
schmidheiny engineering AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Schmidheiny Engineering AG provides engineering services in the planning, design and implementation of construction and infrastructure projects. The core activities include feasibility studies, conception and design, cost estimation and monitoring, scheduling, tendering, technical construction management and quality assurance, commissioning and handover, as well as operational optimization. The company supports customers in the implementation of their projects, from idea to completion, offering a comprehensive range of services.

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Products & services

Industry:Technical Consulting & Engineering
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4.2/5

schmidheiny engineering AG

✓ Offered4
Electrical planning
Electrical installations, building automation and control systems, safety systems, lighting design and emergency lighting systems, communication and multimedia systems, lightning protection and earthing systems, Smarthome.
Fire protection planning
Fire protection consulting, concept, regulatory inspections, quality assurance on site, integrated tests periodically and initially.
Planning for renewable energy
E-Mobility, photovoltaic systems, optimization of self-consumption, aggregation for self-consumption (ZEV) in multi-family houses, application for subsidies, system verification and settlement of the grant credit.
Safety inspections
Final inspections, acceptance inspections, periodic inspections, sample checks for network operators, public-law duties for municipalities and local authorities.
Trust & reputation

ranQ Trust Score of schmidheiny engineering AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

schmidheiny engineering AG scores 71.3 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.78.124%
  • 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.49.510%
  • 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.78.08%
schmidheiny engineering AG scores 90.9 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.70.07%
schmidheiny engineering AG 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%
schmidheiny engineering AG scores 14.3 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 35.14.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

schmidheiny engineering AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 6 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
5
of 5

Aggregated from 6 reviews across all connected sources

Sources
GGoogle56
★TrustpilotSoon
PProvenExpertSoon

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

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Comparisons

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Location

Espenstrasse 137
9443 Widnau
Opening hours
Mon
08:00 - 12:00, 13:30 - 16:30
Tue
08:00 - 12:00, 13:30 - 16:30
Wed
08:00 - 12:00, 13:30 - 16:30
Thu
08:00 - 12:00, 13:30 - 16:30
Fri
08:00 - 12:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-115.967.414
Founded
2010 · 16 years
Last commercial register change
May 30, 2024
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.85.03%
    • Full methodology

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