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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryCrafts & TradesElectricianAttelwilElektro Erismann GmbH
Elektro Erismann GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Elektro Erismann GmbH encompasses the planning, installation, and maintenance of electrical systems and installations for private households and companies, including: electrical installations (high and low voltage) for new buildings and renovations; IT networks and data networks; telephony and communication systems; photovoltaic systems and renewable energy sources; and KNX bus systems for intelligent building automation. The company also provides consulting, planning, and implementation of projects in the field of electrical systems and installations.

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Service area

Offering

Products & services

Industry:Electrician
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4.0/5

Elektro Erismann GmbH

✓ Offered5
Electrical installations
Electrical installations for new builds and renovations in residential, commercial and industrial settings, from strong current to weak current, including extensions, faults and service/maintenance.
IT networks
Set-up of data networks at home and in businesses, including cabling, home and company networks, wireless networks as well as security and monitoring systems.
Telephony
Installation and configuration of telephone systems for fixed-line and internet telephony, implementation when changing the address, formalities with the provider, remote maintenance and commissioning training.
Photovoltaics
Planning, advice, assessment of local conditions, installation and maintenance of photovoltaic systems for roofs and surfaces.
KNX building technology
Consulting, planning, installation and handover of KNX bus systems for smart buildings, including control of blinds, heating, lighting, alarm systems and irrigation.
Trust & reputation

ranQ Trust Score of Elektro Erismann GmbH: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of November 2026

Elektro Erismann GmbH scores 56.8 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
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.73.124%
  • 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.35.310%
  • 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.35.08%
Elektro Erismann GmbH scores 86.7 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.70.07%
Elektro Erismann GmbH 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%
Elektro Erismann GmbH scores 25.7 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 35.25.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Elektro Erismann GmbH reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 3 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 3 reviews across all connected sources

Sources
GGoogle53
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Bifang 1
5056 Attelwil

At a glance

Legal form
Limited Liability Company
UID
CHE-108.702.566
Founded
1997 · 29 years
Last commercial register change
December 9, 2025
Employees
11 to 20

Active in 1 of 26 cantons

  • AGAargau
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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