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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesSubingenRUFER engineering GmbH
RUFER engineering GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of RUFER engineering GmbH encompasses the planning, execution and optimization of building technology, in particular heating, ventilation and air conditioning systems, as well as the implementation of energy consulting and the execution of building automation systems.

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Products & services

Industry:Plumbing & Building Services
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RUFER engineering GmbH

✓ Offered5
Planning building automation and building services
Strategic planning, preliminary studies, design, tendering, implementation and operation for building automation and building services.
Optimisation of installations and building services
Record and document existing installations, clarify requirements with operators, identify optimisation options, compare offers, and support execution and acceptance.
Technical specialist coordination
Technical specialist coordination of HVAC–BA and spatial coordination for building automation and building services projects.
Support for execution
Support for clients and executing contractors on demanding projects, including quality monitoring, documentation and representation at meetings.
Building permit application and private control
Building permit applications with private project and execution control, including evidence for noise protection and energy, as well as project coordination.
Trust & reputation

ranQ Trust Score of RUFER engineering GmbH

Trust Score

No score yet

x

A published score requires a data basis of at least 50% and data from at least two criteria groups other than identity. Missing evidence: Review quality, Review volume, Review recency, Media authority

Data basis 54% · As of October 2026

RUFER engineering 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.
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%
RUFER engineering GmbH scores 70.2 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.70.212%
  • 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%
RUFER engineering GmbH scores 83.3 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).83.322%
RUFER engineering GmbH scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%

The data basis is 54%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Media authority. As of October 2026.

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

Knowledge

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Location

Derendingenstrasse 14
4553 Subingen

At a glance

Legal form
Limited Liability Company
UID
CHE-347.086.447
Founded
2020 · 6 years
Last commercial register change
August 28, 2020
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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