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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryIndustryElectrical IndustryDietikonThomas Lüem Partner AG, Zweigniederlassung Dietikon
Thomas Lüem Partner AG, Zweigniederlassung Dietikon Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Thomas Lüem Partner AG, Zweigniederlassung Dietikon is an engineering firm for building services offering electrical and overall planning, building automation, fire protection and technical consultancy. Its services include project planning, technical coordination, integral testing and quality assurance, as well as photovoltaics and e-mobility solutions and expert reports.

AI-generated
Offering

Products & services

Industry:Electrical Industry
✓ Offered10
Electrical design
Design of power supply, medium-voltage systems, power and low-current installations, security, lighting and ICT systems, as well as fire alarm, access control and lightning protection systems.
Building automation
Needs analysis, development and implementation of intelligent building automation concepts, integration of HVAC, lighting, security and IT systems, as well as energy monitoring and integrated tests.
Fire protection
Preparation of fire protection concepts and risk analyses, planning of escape and rescue routes, lightning protection design, coordination with authorities, QSS 1-4, integrated tests and acceptance inspections.
Energy consulting
Photovoltaic systems, energy storage as well as electromobility and charging infrastructure; including analysis, sizing, integration into energy and building systems, and advice on funding opportunities.
BIM planning
Development of BIM strategies and project goals, creation and review of the BAP, BIM coordination across all project phases, modelling of specialist models and quality assurance of data deliveries.
Owner's representative
Independent consulting, overall technical coordination, cost, schedule and quality control, risk and sustainability management, as well as support through commissioning and handover.
Quality assurance and expert assessments
Interface checks, review of design documents, monitoring of implementation in accordance with standards, assessment of changes and variants, as well as technical second opinions.
Overall building services planning
Overall planning from a single source with a central point of contact, coordination of external specialists, interface management, schedule and cost control, and integrated planning of building services.
Electrical general contracting
Project responsibility for electrical installations from design through coordination and procurement to execution and commissioning, including schedule, cost and quality responsibility.
Lighting design
Artificial lighting design and holistic lighting concepts for indoor and outdoor spaces, planning of workplace, safety, emergency and escape route lighting, as well as LED retrofits.
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4.1/5

Thomas Lüem Partner AG, Zweigniederlassung Dietikon

Trust & reputation

ranQ Trust Score of Thomas Lüem Partner AG, Zweigniederlassung Dietikon: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Thomas Lüem Partner AG, Zweigniederlassung Dietikon scores 59.3 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.35.08%
Thomas Lüem Partner AG, Zweigniederlassung Dietikon scores 82.7 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.89.612%
  • 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%
Thomas Lüem Partner AG, Zweigniederlassung Dietikon scores 85.0 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).85.022%
Thomas Lüem Partner AG, Zweigniederlassung Dietikon scores 77.1 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 35.77.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Thomas Lüem Partner AG, Zweigniederlassung Dietikon reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «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

Bernstrasse 390
8953 Dietikon
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Branch
UID
CHE-476.934.463
Founded
2015 · 11 years
Last commercial register change
February 2, 2015
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.76.06%
  • 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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