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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringSionGil Sequeira - Aetherys Etudes CVCS
Gil Sequeira - Aetherys Etudes CVCS Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Gil Sequeira - Aetherys Etudes CVCS is an engineering office for HVAC and sanitary planning and consulting. The company develops studies and concepts for heating, ventilation, air conditioning, plumbing, and building services, and supports projects from design through execution.

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Offering

Products & services

Industry:Technical Consulting & EngineeringCivil Engineering Firms
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Gil Sequeira - Aetherys Etudes CVCS

✓ Offered4
HVAC Planning
Planning of heating, ventilation, air-conditioning and sanitary systems according to SIA standards, from feasibility study and sizing through to commissioning.
Technical Consulting for Building Services
Technical advice for private and professional clients on renovations, extensions and building optimisation, with a focus on heating, ventilation and sanitary solutions.
Energy Concepts and Renovation Optimisation
Development of energy concepts using heat pumps, geothermal energy and solar thermal, plus energy renovations, Minergie-related support and subsidy guidance.
Site Supervision and Execution Control
Support during execution with checks on plans, schedules and installation quality, plus coordination with architects and partner engineers.
Trust & reputation

ranQ Trust Score of Gil Sequeira - Aetherys Etudes CVCS: 3.6 out of 5.0

Trust Score3.6/ 5.0

Solid

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Data basis 54% · As of October 2026

Gil Sequeira - Aetherys Etudes CVCS 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%
Gil Sequeira - Aetherys Etudes CVCS scores 46.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.25.012%
  • 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%
Gil Sequeira - Aetherys Etudes CVCS scores 83.3 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).83.322%
Gil Sequeira - Aetherys Etudes CVCS scores 20.0 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.20.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Gil Sequeira - Aetherys Etudes CVCS reaches a ranQ Trust Score of 3.6 out of 5.0 — rated «Solid». 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

Rue de la Dent-Blanche 12
1950 Sion

At a glance

Legal form
Sole proprietorship
UID
CHE-495.922.325
Founded
2025 · 1 year
Last commercial register change
August 7, 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.67.06%
  • 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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