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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringLucerneAicher, De Martin, Zweng AG
Aicher, De Martin, Zweng AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Aicher, De Martin, Zweng AG is an energy and building services engineering firm that plans and advises on heating, ventilation, cooling and sanitary systems. Its services include building automation, energy and sustainability consulting, laboratory planning, BIM and project coordination.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered9
Heating
Planning of demanding heating system installations, energy concepts, heating systems with renewable energies, energy centres, district heating systems, heat pump systems and combined heat and power.
Ventilation
Planning of ventilation systems for commercial, administrative, laboratory, congress, exhibition, industrial, hospital, hotel and catering buildings, as well as for cinema, theatre, fitness and wellness facilities.
Cooling
Planning of cooling systems for data centres, air-conditioning cooling, technical refrigeration and commercial refrigeration, as well as concepts with flexible and modular systems.
Sanitary
Development of cost-effective sanitary concepts, supply and disposal concepts, overall drainage, domestic hot water and water treatment, rainwater utilisation, irrigation, medical gases and sprinkler systems.
Building Automation
Planning and implementation of building automation solutions, engineering for the field level, automation level and operating and management level, including system modernisation, integration of third-party systems and IoT solutions.
BIM
BIM coordination, BIM management and BIM consulting with digital building models as well as digital coordination and collaboration tools.
Energy & Sustainability
GEAK, energy concepts, advice on the use of energy labels, thermal building simulation, as well as the assessment and improvement of thermal, acoustic, visual and hygienic comfort and energy optimisation.
Laboratory Planning
Planning and realisation of laboratory buildings, utilisation concepts, laboratory typification, laboratory fit-out systems, media connections, interface definitions, storage, disposal, safety consulting and laboratory moves.
Coordination
Technical and spatial specialist coordination during all SIA phases, the interface between the client, the lead project manager and specialist planners, with digital exchange of data and information.
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4.2/5

Aicher, De Martin, Zweng AG

Trust & reputation

ranQ Trust Score of Aicher, De Martin, Zweng AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Aicher, De Martin, Zweng AG scores 62.1 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.75.024%
  • 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.40.910%
  • 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%
Aicher, De Martin, Zweng AG scores 92.0 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.70.07%
Aicher, De Martin, Zweng 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%
Aicher, De Martin, Zweng AG scores 80.0 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 35.80.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Aicher, De Martin, Zweng AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 4 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 4 reviews across all connected sources

Sources
GGoogle54
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Haldenstrasse 44
6006 Lucerne
Opening hours
Mon
08:00 - 11:30, 13:30 - 17:00
Tue
08:00 - 11:30, 13:30 - 17:00
Wed
08:00 - 11:30, 13:30 - 17:00
Thu
08:00 - 11:30, 13:30 - 17:00
Fri
08:00 - 11:30, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.846.855
Founded
1976 · 50 years
Last commercial register change
August 24, 2026
Employees
11 to 20
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.95.03%
    • Full methodology

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