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

About the company

Schranz AG is a building services contractor specialising in sheet-metal work and plumbing installations. Its services include roofing and building renovation, installation and maintenance of plumbing and heating systems, and the planning and installation of solar systems.

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Service area

Offering

Products & services

Industry:Heating installerPlumber
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Schranz AG

Sheet metal worker
✓ Offered3
Building sheet metal work
Building sheet metal work for new builds, conversions, renovations and repairs; flat, pitched and sheet-metal roof work, renovation of older buildings, lightning protection systems.
Sanitary installations
Sanitary installations for bathrooms and kitchens; general service work and maintenance, installations, conversions, new builds and boiler service.
Heating installations and repairs
Repairs of heating systems, installation of underfloor heating as well as consultation, planning and installation of solar systems.
Trust & reputation

ranQ Trust Score of Schranz AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

Schranz AG 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%
Schranz AG scores 85.5 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.55.07%
Schranz AG 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%
Schranz AG scores 2.3 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 35.2.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Schranz AG 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 November 2026.

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

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Location

Erlensträsschen 48
4125 Riehen

At a glance

Legal form
Corporation
UID
CHE-106.477.967
Founded
1989 · 37 years
Last commercial register change
August 27, 2026
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • BSBasel-City
  • BSRiehen
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.
100.0
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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