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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringErlenbach ZhSerena Elektrokontrollen GmbH
Serena Elektrokontrollen GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Serena Elektrokontrollen GmbH performs electrical inspections and issues safety certificates for electrical installations. Services include periodic inspections, acceptance checks, safety certificates for property transfers, expert assessments, thermography, lightning protection checks, sample inspections and network quality analysis.

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Products & services

Industry:Technical Consulting & EngineeringTesting & Inspection Centers
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3.6/5

Serena Elektrokontrollen GmbH

✓ Offered8
Periodic electrical inspection
Regular inspection of electrical installations in accordance with NIV, including testing of the systems, defect report, rectification of defects, and issuing the safety certificate per meter current circuit.
Acceptance inspection
Independent inspection of the initial test and final inspection of electrical installations in accordance with NIV, including checking safety-relevant values and assessing installation quality.
Safety certificate for property transfer
Inspection of electrical home installations when an immovable property is sold, if no current safety certificate is available, and issuance of the required safety certificate.
Sample inspections
Sample-based verification of low-voltage installations that have already been inspected, carried out by an independent inspection body on behalf of the network operator.
Expert assessments
Analysis of electrical systems, assessment of their condition, recommendations for improvements and expansions, and damage evaluations for insurers and property acquisitions.
Lightning protection inspection
Periodic inspection of lightning protection systems, including inspection of air-termination devices, down conductors, earthing systems and connecting elements, as well as measurements on the down conductors.
Electrical thermography
Thermographic testing of electrical systems under load using thermal images, visual inspection, load measurement, and a report to identify fault sources and weak points.
Grid quality analysis
Measurement and analysis of voltage and grid quality according to EN 50160, including recording frequency, voltage dips, harmonics, flicker, and voltage unbalance.
Trust & reputation

ranQ Trust Score of Serena Elektrokontrollen GmbH: 3.6 out of 5.0

Trust Score3.6/ 5.0

Solid

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Data basis 54% · As of October 2026

Serena Elektrokontrollen GmbH 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%
Serena Elektrokontrollen GmbH scores 50.8 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%
Serena Elektrokontrollen GmbH 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%
Serena Elektrokontrollen GmbH scores 0.6 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 35.0.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Serena Elektrokontrollen GmbH 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

Neue Allmendstrasse 6
8703 Erlenbach Zh

At a glance

Legal form
Limited Liability Company
UID
CHE-414.737.439
Founded
2025 · 1 year
Last commercial register change
July 28, 2025
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.
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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