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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesElectrical Planning & InstallationAarauWeiss weiss wie GmbH
Weiss weiss wie GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Weiss weiss wie GmbH provides electrical inspections and electrical consultancy services. Services include periodic and acceptance inspections, device testing, and advice on energy optimization, energy analysis, photovoltaic systems and electric mobility.

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Offering

Products & services

Industry:Electrical Planning & Installation
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Weiss weiss wie GmbH

11
Electrical inspection
Electrical inspections for electrical systems, including periodic inspections, acceptance inspections, a safety certificate for property transfer, acceptance of photovoltaic systems, and equipment testing.
Electrical consulting
Electrical consulting for energy optimisation, energy analysis, photovoltaics and e-mobility, with advice, planning and implementation covering electrical systems and energy-related topics.
Photovoltaic systems
Planning, installation and commissioning of photovoltaic systems, including needs analysis, storage solutions, maintenance and electrical inspections.
E-mobility
Consulting and implementation for charging infrastructure, from choosing the right charging station to installing wallboxes and charging points.
Energy optimisation
Measures to reduce electricity consumption for households and businesses, tailored to needs and budget.
Energy analysis
Detailed analysis of energy demand with measurements, evaluation and specific recommendations to reduce electricity consumption and costs.
Periodic electrical inspections
Regular inspections of electrical installations to identify risks such as short circuits, fires or electric shocks, and to comply with legal requirements.
Acceptance inspection
Inspection of newly completed electrical installations by an independent inspection company, including certification of the safety certificate and fulfilment of the inspection obligation.
Safety certificate for property transfer
Extraordinary inspection of electrical installations when a property is sold, if no current safety certificate is available.
Acceptance of photovoltaic systems
Certification and measurements by an independent inspection body for solar installations.
Equipment testing
Testing of electrical equipment such as power tools, cable reels and plug-in devices according to SN EN 50699, as well as after repairs according to SN EN 50678.
Trust & reputation

ranQ Trust Score of Weiss weiss wie GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Weiss weiss wie GmbH scores 77.0 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.79.424%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.52.910%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.100.08%
Weiss weiss wie GmbH scores 67.8 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.64.612%
  • 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%
Weiss weiss wie GmbH 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%
Weiss weiss wie GmbH scores 7.7 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 35.7.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Weiss weiss wie GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 7 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle57
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

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Comparisons

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Location

Milchgasse 34
5000 Aarau
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-317.425.929
Founded
2021 · 5 years
Last commercial register change
September 18, 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.
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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