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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesSpecialized Construction InstallationsVillars-Ste-CroixGaznox SA
Gaznox SA Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Gaznox SA consists of the design, manufacture and installation of flues and chimneys for various applications, including: flues and chimneys for boilers, industrial chimneys, chimneys for emergency power generators, chimneys for wood stoves and fireplaces, metal constructions (e.g. walkways, beams, roof trusses), fire protection measures (e.g. fire hoses, channels and separations), masonry, plastering and painting work, ventilation systems and galleries. The company offers these services for new constructions, renovations and maintenance work in the cantons of Geneva, Vaud, Valais, Neuchâtel and Jura.

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Products & services

Industry:Specialized Construction Installations
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Gaznox SA

Flue liners and chimneys for boilers
Flexible or rigid flue liners, concentric flue ducts for condensing boilers, installations for gas, oil or wood boilers, compliant with Swiss standards.
Industrial flue liners and chimneys
Multi-material ducts, custom exhaust runs for industrial boilers or furnaces, technical connections, assisted ventilation and installation according to Swiss standards.
Flue liners for generators and standby units
Custom exhaust ducts for generators and standby units, with resistance to extreme temperatures, flexible connections, vertical chimneys or façade flues.
Flue systems for single-family homes
Chimneys for gas, oil or wood boilers, single or concentric flue ducts, flexible or rigid flue liners, discreet finishes and installation in compliance.
Concrete cutting
Wall and floor sawing, precision coring, cuts for windows, doors and stair openings, dust and residue treatment.
Metal construction
Metal staircases, frames and support structures, walkways, guard rails, metal cladding and finishes, for new builds and renovations.
Ventilation ducts
Installation of rigid or flexible ducting, ducts for range hoods, bathrooms and technical rooms, single- or dual-flow VMC systems.
Masonry chimneys
Construction of new masonry flues, rehabilitation or lining of existing flues, roof stacks and adaptation to heating appliances.
Trust & reputation

ranQ Trust Score of Gaznox 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.

Gaznox 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.
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%
Gaznox SA 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%
Gaznox SA 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%
Gaznox SA scores 1.1 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 35.1.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Gaznox 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.

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Location

La Croix-du-Péage 11
1029 Villars-Ste-Croix

At a glance

Legal form
Corporation
UID
CHE-114.482.893
Founded
2008 · 18 years
Last commercial register change
October 21, 2024
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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