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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesSecurity systemsThayngenTeKoSi AG
TeKoSi AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

TeKoSi AG plans and implements door and access systems for buildings. Its services include specialist door planning, project and construction management, consulting, installation and commissioning of door management, automation and access control systems, as well as maintenance, fault resolution and quality inspections.

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Offering

Products & services

Industry:Security systemsBuilding installation
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TeKoSi AG

✓ Offered12
Door specialist planning
Review of architects' plans, preparation of the door matrix, installation details, door schedule, functional descriptions, as well as safety and fire protection plans.
Project preparation, consulting and support
Project preparation, consulting and support in all phases, including clarification of access-related issues, constraints and project procedures.
Designing SIA phases 41–53
Carrying out and supporting SIA phases 41 to 53, including defining the roadmap and implementing the required steps throughout the project.
Scheme creation
Creation and optimisation of complex schemes for projects, as part of consulting, planning and technical project implementation.
Construction management
Taking over construction management as the interface between door installers, electrical trades, intruder alarm systems and access control systems.
Execution of door systems
Independent execution of the planned projects, from implementation to functional commissioning, from a single source.
Door management systems
Development, implementation and consulting for comprehensive door management systems as a core core competency.
Automation and access control systems
Consulting and matching suitable automation and access control systems via a partner network, including system selection for projects.
Maintenance
Maintenance services to keep operations running so that installations work as fault-free as possible.
Fault rectification
Rapid analysis and rectification of faults during ongoing operation, promptly and without lengthy project analysis.
Inspections & expert reports
Inspection and verification of installations, including third-party installations, as well as preparation of expert reports by specialists.
Quality controls
Acceptance and execution of quality controls on installations and projects.
Trust & reputation

ranQ Trust Score of TeKoSi AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

TeKoSi 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%
TeKoSi AG scores 85.5 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%
TeKoSi 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%
TeKoSi AG scores 8.9 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 35.8.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

TeKoSi 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 November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Knowledge

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Location

Erlengasse 3
8240 Thayngen
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.477.042
Founded
1993 · 33 years
Last commercial register change
August 13, 2026
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.70.03%
    • Full methodology

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