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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSpecialized Construction ActivitiesMühlehornStefan Trulli AG, Kaminbau Schlosserei Maschinenbau
Stefan Trulli AG, Kaminbau Schlosserei Maschinenbau Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Stefan Trulli AG is chimney construction, including planning, manufacturing, assembly and renovation of chimneys, as well as the production and installation of individual chimney solutions.

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Offering

Products & services

Industry:Specialized Construction Activities
✓ Offered4
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Stefan Trulli AG, Kaminbau Schlosserei Maschinenbau

Chimney construction
Custom chimney solutions, single- and double-walled stainless-steel chimneys, shaft systems and freestanding industrial chimneys; consultation, planning, installation and fitting for various heating systems.
Chimney renovation
Comprehensive chimney renovation from cleaning and repair to complete redesign; restoring function, safety and visual fit for existing installations.
New chimney installations
Planning and delivery of new chimney installations for new builds, from initial consultation to final installation; functional, safe and tailored to the project.
Metal fabrication
Automatic, energy-independent barrier systems with Swiss patent and self-closing mechanism; suitable for car parks, industrial sites and private installations.
Trust & reputation

ranQ Trust Score of Stefan Trulli AG, Kaminbau Schlosserei Maschinenbau: 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.

Stefan Trulli AG, Kaminbau Schlosserei Maschinenbau 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%
Stefan Trulli AG, Kaminbau Schlosserei Maschinenbau 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%
Stefan Trulli AG, Kaminbau Schlosserei Maschinenbau 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%
Stefan Trulli AG, Kaminbau Schlosserei Maschinenbau scores 0.3 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 35.0.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Stefan Trulli AG, Kaminbau Schlosserei Maschinenbau 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.

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Location

Dörflistrasse 8
8874 Mühlehorn

At a glance

Legal form
Corporation
UID
CHE-112.993.119
Founded
2006 · 20 years
Last commercial register change
March 3, 2021
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.100.06%
  • 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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