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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding services engineerUrdorfRohner Engineering GmbH
Rohner Engineering GmbH Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Rohner Engineering GmbH is an engineering office specialising in building services for heating, ventilation, cooling and sanitary systems. It plans renovations, conversions and new builds for residential, commercial and industrial buildings, and supports projects from initial assessment and concept development through detailed design to commissioning.

AI-generated
Offering

Products & services

Industry:Building services engineer
✓ Offered5
Building Services Renovation
Heating, ventilation and sanitary systems in existing buildings; condition analysis, renovation concepts, phased execution, energy upgrades, tendering and site supervision for occupied properties.
Heat Generator Replacement
Heat generator replacement based on actual heat demand; existing-system analysis, variants for heat pumps, district heating, wood, gas or hybrid systems, plus planning and subsidy documents.
Building Services for Residential Buildings
HLKS solutions for single- and multi-family housing and cooperatives; heating, hot water, ventilation, sanitary systems, drainage and life-cycle costs for affordable housing.
Building Services for Commercial and Industrial Properties
Building services for office, retail and production spaces; air conditioning, process heat, process cooling, ventilation, sanitary systems, planning, tendering and quality assurance.
Rough Cost Estimation for Building Services Projects
Rough cost estimation for renovation, conversion and new-build projects; cost derivation, breakdown by trade, budget basis and support for tenders and subsidy applications.
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3.4/5

Rohner Engineering GmbH

Trust & reputation

ranQ Trust Score of Rohner Engineering GmbH: 3.4 out of 5.0

Trust Score3.4/ 5.0

Solid

x

Data basis 54% · As of November 2026

Rohner 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%
Rohner Engineering GmbH scores 40.1 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.0.012%
  • 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%
Rohner 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%
Rohner Engineering GmbH scores 0.9 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 35.0.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Rohner Engineering GmbH reaches a ranQ Trust Score of 3.4 out of 5.0 — rated «Solid». 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

Uetlibergstrasse 39
8902 Urdorf

At a glance

Legal form
Limited Liability Company
UID
CHE-445.018.470
Founded
2026 · 0 years
Last commercial register change
August 24, 2026
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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