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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryCrafts & TradesHeating installerAllschwilarun GmbH
arun GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

arun GmbH plans, installs, maintains and repairs plumbing and heating systems. It also plans and installs photovoltaic and solar thermal systems and provides servicing for building and energy systems.

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Presence

Service area

Offering

Products & services

Industry:Heating installerPlumber
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3.8/5

arun GmbH

Photovoltaics
✓ Offered4
Plumbing
Bathroom planning and fabrication, new builds and conversions, renovation and refurbishment, water treatment, shower systems, pipe cleaning, boiler descaling as well as repairs and service.
Heating
Heating planning and implementation, new builds and modernisation, renovation of old heating systems, heat pumps and alternative systems, underfloor heating, maintenance, breakdown service and emergency service.
Solar systems
Planning and advice, installation of photovoltaics, solar thermal systems, storage solutions, monitoring and control, maintenance and cleaning, as well as expansion and retrofitting.
Service
Leak detection and pressure testing, radiator and thermostat replacement, pipe bursts and pipe repairs, boiler and cylinder repairs, pump service, blockages and backflow, maintenance contracts and emergency service.
Trust & reputation

ranQ Trust Score of arun GmbH: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 54% · As of November 2026

arun 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%
arun GmbH scores 60.8 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.39.612%
  • 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.70.07%
arun 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%
arun GmbH scores 1.1 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 35.1.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

arun GmbH reaches a ranQ Trust Score of 3.8 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 November 2026.

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

Knowledge

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Location

Baslerstrasse 191
4123 Allschwil

At a glance

Legal form
Limited Liability Company
UID
CHE-299.545.120
Founded
2024 · 2 years
Last commercial register change
April 2, 2024
Employees
11 to 20

Active in 1 of 26 cantons

  • BLBasel-Country
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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