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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,544 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringChêne-BourgDURLEMANN ENERGIES SA
DURLEMANN ENERGIES SA Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Durlemann Energies is the installation, maintenance and repair of heating systems, including renewable energy systems such as pellet heating, photovoltaic systems and geothermal energy. The company also offers energy consulting, planning and services, including energy audits and optimization.

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Offering

Products & services

Industry:Technical Consulting & Engineering
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4.1/5

DURLEMANN ENERGIES SA

Plumbing & Building Services
Solar & Photovoltaics
✓ Offered5
Maintenance & Troubleshooting
Maintenance and troubleshooting of technical installations, with maintenance interventions to ensure the proper functioning of the equipment.
Energy Performance Contract
Energy savings and remote management of installations, as part of an energy performance contract focused on optimizing consumption.
Technical Studies
Technical studies for installation projects, including analysis and preparation of thermal and energy solutions.
Thermal Installation
Thermal installations, air conditioning, ventilation and networks for technical building equipment.
Renewable Energy Generation
Photovoltaic and solar energy production, heat pumps and geothermal energy for generating and using renewable energies.
Trust & reputation

ranQ Trust Score of DURLEMANN ENERGIES SA: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

DURLEMANN ENERGIES SA 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%
DURLEMANN ENERGIES SA scores 85.5 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.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%
DURLEMANN ENERGIES SA scores 83.3 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).83.322%
DURLEMANN ENERGIES SA scores 6.3 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 35.6.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

DURLEMANN ENERGIES SA 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

Rue Peillonnex 36
1225 Chêne-Bourg

At a glance

Legal form
Corporation
UID
CHE-107.857.031
Founded
1985 · 41 years
Last commercial register change
April 29, 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.
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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