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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureCivil Engineering FirmsBirsfeldenLeuenberger & Co. AG, Ingenieurbüro für Energie- und Haustechnik
Leuenberger & Co. AG, Ingenieurbüro für Energie- und Haustechnik Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Leuenberger & Co. AG, Ingenieurbüro für Energie- und Haustechnik offers consulting, planning, coordination and construction management services for heating, ventilation, air conditioning, cooling, sanitary systems, building services and building physics.

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Products & services

Industry:Civil Engineering Firms
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Leuenberger & Co. AG, Ingenieurbüro für Energie- und Haustechnik

6
Advisory, Planning, Coordination & Construction Management
Advisory, planning, coordination and construction management in the fields of heating, ventilation, air conditioning, refrigeration, sanitary services, building services engineering and building physics.
Heating System Design
Design for conventional systems, heat pumps, district heating, wood-chip fired heating systems, combined heat and power (CHP), block heating power plants and heat recovery.
Ventilation, Air-Conditioning and Refrigeration Design
Design of ventilation systems, partial air-conditioning and air-conditioning systems, gentle air conditioning, chilled ceilings, adiabatic air cooling and refrigeration systems.
Plumbing and Sanitary Design
Planning for water supply, domestic hot water generation, water treatment, wastewater disposal, rainwater use and fire-fighting installations.
Building Services Design
Energy and supply concepts, condition analyses, refurbishment concepts and overall planning for building services engineering.
Building Physics Consulting
Advice on energy- and heat-related measures as well as building-physics calculations and investigations.
Trust & reputation

ranQ Trust Score of Leuenberger & Co. AG, Ingenieurbüro für Energie- und Haustechnik: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Leuenberger & Co. AG, Ingenieurbüro für Energie- und Haustechnik 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%
Leuenberger & Co. AG, Ingenieurbüro für Energie- und Haustechnik scores 79.8 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.86.512%
  • 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%
Leuenberger & Co. AG, Ingenieurbüro für Energie- und Haustechnik 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%
Leuenberger & Co. AG, Ingenieurbüro für Energie- und Haustechnik 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

Leuenberger & Co. AG, Ingenieurbüro für Energie- und Haustechnik 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 October 2026.

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

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Location

Sternenfeldstrasse 14
4127 Birsfelden

At a glance

Legal form
Corporation
UID
CHE-371.556.749
Founded
2016 · 10 years
Last commercial register change
December 18, 2019
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.100.06%
  • 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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