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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringBaselAicher, 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 provides planning and consulting for heating, ventilation, cooling and sanitary systems. Its services also include building automation, energy & sustainability, BIM, laboratory planning and coordination.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered10
Heating system planning
Planning of demanding heating installations, energy concepts, heating systems with renewable energy, energy centers, district heating systems, heat pump systems, and system combinations heating-cooling.
Ventilation planning
Planning of ventilation systems for commercial, laboratory, congress, industrial and hospital buildings, as well as hotels and gastronomy, focusing on comfort, indoor climate and energy consumption.
Refrigeration planning
Planning of refrigeration systems for data centers, air-conditioning refrigeration, technical and commercial refrigeration, and system solutions with flexible, modular concepts.
Sanitary planning
Development of cost-effective sanitary concepts, supply and disposal concepts, complete drainage concepts, domestic hot water and water treatment, rainwater utilization, irrigation, medical gas and sprinkler systems.
Building automation
Design and implementation of building automation solutions for the field level, automation level, and operator and management level, including system integration, modernization and IoT solutions.
Energy and sustainability consulting
Advisory services and project support for energy and sustainability, energy concepts, feasibility studies, subsidy applications, operational optimization, comfort assessment, sustainability certificates, as well as energy proofs and simulations.
Lab planning
Design and realization of complex laboratory buildings, including utilization concepts, lab standardization, laboratory equipment systems, distribution of utilities/media, definition of interfaces, storage, disposal, safety consulting and laboratory relocation.
Specialist coordination
Technical and spatial coordination during all SIA phases, interface management between the client, the overall project manager and specialist planners, as well as data and information exchange using software tools.
BIM services
BIM coordination, BIM management and BIM consulting with digital building models, structured planning processes, and digital coordination and collaboration tools.
GEAK and energy consulting
Initial advisory services, Building Energy Certificate of the cantons (GEAK/GEAK Plus), analysis of the building envelope and building services, retrofit options, and advice on funding.
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4.1/5

Aicher, De Martin, Zweng AG

Trust & reputation

ranQ Trust Score of Aicher, De Martin, Zweng AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 58% · As of October 2026

Without public customer reviews the score stays capped.

Aicher, De Martin, Zweng AG 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%
Aicher, De Martin, Zweng AG scores 84.1 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.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 40.0 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: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.0.04%
Qualifications+0.00

Aicher, De Martin, Zweng AG 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 58%, 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.

Press

Media

October 20, 2016Media
Mehr als die Summe der Teile Systemtrennung – ein Sonderfall
espazium.ch

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Location

Münchensteinerstrasse 127
4053 Basel

At a glance

Legal form
Branch
UID
CHE-233.648.634
Founded
1983 · 43 years
Last commercial register change
December 2, 2024
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.
76.0
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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