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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,544 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringBernexK. Wintsch et Cie SA
K. Wintsch et Cie SA Logo
Verified· 3 sourcesTrust Score
Summary

About the company

K.Wintsch & Cie SA is an engineering firm specializing in energy efficiency and sustainable building. The company's core activity is providing consulting services for the planning and implementation of energy-efficient and sustainable buildings, including the installation of technical systems.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered8
Project planning and management
Macro and detailed planning of CVCR works and associated systems, multidisciplinary technical coordination, optimization of costs and schedules, technical assistance to the client, financial management.
Heating, Ventilation, Air Conditioning & Refrigeration
Preliminary studies, pre-project, design, tender process, execution and commissioning for CVCR installations; production of heat, ventilation, air conditioning and refrigeration.
Building energy concept
Analysis of site constraints and energy resources, proposal of variants and pre-sizing of installations, techno-economic analysis of the solutions, collaboration with the architect.
Technical audit & CECB/CECB +
Energy and technical audit of the building, analysis of consumption, condition assessment of equipment, simulations and quantified improvement variants, files related to subsidies and legal obligations.
Building permit application
Preparation of authorization application files for demolition, construction, extension, renovation, or change of use; energy and thermal justifications and SRE/IDC calculations.
Digital control / Building automation
MCR concept, schematic diagrams, specifications, operating descriptions, validation of electrical schematics, energy monitoring and optimization of system operation.
Development of BIM models
BIM models for HVAC installations, 3D modelling with technical data, clash detection, schedules and quantity take-offs, plans for design, execution and operation.
Dynamic numerical simulations (CFD)
Simulations of fluid flows for thermal comfort, pollutant concentration, fire safety and buildings with specific requirements.
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4.0/5

K. Wintsch et Cie SA

Trust & reputation

ranQ Trust Score of K. Wintsch et Cie SA: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

K. Wintsch et Cie SA scores 60.4 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.70.824%
  • 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.27.910%
  • 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%
K. Wintsch et Cie SA scores 89.3 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.70.07%
K. Wintsch et Cie SA 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%
K. Wintsch et Cie SA scores 3.1 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 35.3.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

K. Wintsch et Cie SA reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 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 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Chemin de la Distillerie 4
1233 Bernex
Opening hours
Mon
08:00 - 18:00
Tue
08:00 - 18:00
Wed
08:00 - 18:00
Thu
08:00 - 18:00
Fri
08:00 - 18:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.857.019
Founded
1990 · 36 years
Last commercial register change
January 28, 2026
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.70.03%
    • Full methodology

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