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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringNeuchâtelSydeen Sàrl
Sydeen Sàrl Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Sydeen Sàrl is a company specialized in engineering services in the field of climate and environmental technology. The core activities include: engineering services for industry, the tertiary sector, collective housing and individual housing; climate engineering (heating, ventilation and air conditioning); energy and environmental technology; 3D and BIM (Building Information Modeling) modeling and visualization of buildings and facilities; research and development in the field of climate and environmental technology. The company provides solutions to technical problems in the areas of climate, energy and environment and has four departments specialized in these areas.

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Products & services

Industry:Technical Consulting & Engineering
✓ Offered
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4.1/5

Sydeen Sàrl

3
Studies and design CVS
Tailor-made design of ventilation, air-conditioning, heating and plumbing systems; feasibility study, detailed sizing, tender documents and project follow-up through to completion.
Expertise and diagnostics CVS
Diagnostics and optimization of existing CVS installations; refurbishment of technical systems, energy expertise, risk analysis, temperature variability and assessment of refrigerant gases.
Compliance and regulations
Support for project compliance; building physics, acoustics, CECB, Minergie and building permits, with preparation of the documentation and follow-up until approval is obtained.
Trust & reputation

ranQ Trust Score of Sydeen Sàrl: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Sydeen Sàrl 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%
Sydeen Sàrl scores 73.9 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.70.212%
  • 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%
Sydeen Sàrl 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%
Sydeen Sàrl scores 4.0 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 35.4.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Sydeen Sàrl 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

Rue des Beaux-Arts 17
2000 Neuchâtel
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-409.278.779
Founded
2020 · 6 years
Last commercial register change
January 23, 2020
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.
88.0
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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