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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringLenzburgDurena AG
Durena AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Durena AG is the planning, design, overall and construction management of energy projects, particularly in the field of renewable energies and energy efficiency. This includes, among other things: energy economic consulting, analysis and concepts, planning and design of energy plants, overall and construction management of energy projects, and CO2 management. The company focuses on providing climate-neutral heat and offers solutions for the generation, distribution and supply of thermal energy.

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Offering

Products & services

Industry:Technical Consulting & Engineering
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4.0/5

Durena AG

Sustainability Sector
✓ Offered10
Energy market consulting
Energy market consulting, analysis and concepts, planning and project engineering, as well as overall and site management for energy projects.
CO2 management
CO2 management for energy and industrial projects, including target agreements and support for measures to reduce emissions.
District heating
Planning and project engineering of district heating networks, heating plants, transfer lines and district heating systems for heat supply and waste heat utilization.
Waste heat utilization
Waste heat utilization from ARA, wastewater, flue gas cleaning, cooling wastewater and bathing wastewater, as well as heat network solutions with heat recovery.
Biogas
Biogas upgrading, injection into the natural gas grid, and use of biogas or digester gas in CHP units, micro gas turbines and energy systems.
Biomass and wood energy
Wood-fired heating plants, wood-fired combined heat and power plants, wood gasification, wood-energy local heat distribution, and other biomass-based heat systems.
Geothermal energy
Site evaluation, geological exploration and use of deep geothermal energy, as well as heat utilization from geothermal water.
Heat pump solutions
Heat pumps for using thermal water, lake water and groundwater, as well as decentralized heat pump concepts.
Refrigeration systems
Refrigeration systems and thermal systems in the context of energy supply, efficiency and heat recovery.
Solar energy
Solar energy as part of energy concepts and project engineering for heating and energy systems.
Trust & reputation

ranQ Trust Score of Durena AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Durena AG scores 52.7 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.68.224%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.17.610%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.50.08%
Durena AG scores 92.3 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.82.07%
Durena AG 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%
Durena AG scores 42.9 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 35.42.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Durena AG reaches a ranQ Trust Score of 4.0 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 1 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 1 reviews across all connected sources

Sources
GGoogle51
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

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Location

Murackerstrasse 6
5600 Lenzburg

At a glance

Legal form
Corporation
UID
CHE-106.549.207
Founded
1990 · 36 years
Last commercial register change
July 10, 2026
Employees
21 to 50
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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