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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesLucerneWirkungsgrad Ingenieure AG
Wirkungsgrad Ingenieure AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Wirkungsgrad Ingenieure AG is an independent engineering firm for energy and building services. It designs and implements heating, ventilation, air-conditioning, refrigeration, sanitary and sprinkler systems as well as building automation, and provides strategic planning, energy concepts, overall planning, fire protection, renovation and operational optimisation.

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Products & services

Industry:Plumbing & Building Services
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4.0/5

Wirkungsgrad Ingenieure AG

7
Planning of heating, ventilation, air-conditioning, refrigeration, sanitary, sprinkler and building automation systems
Planning of heating, ventilation, air-conditioning, refrigeration, sanitary, sprinkler and building automation systems; from the first concept to handover, including technical and organisational implementation.
Strategic planning for energy and building technology
Needs definition, condition analyses, variant comparisons, energy concepts, cost-effectiveness calculations and life-cycle assessments as a basis for further project development.
Supervision of implementation and technical acceptance
Supervision of the installation implementation up to technical acceptance and handover, focusing on systems that work reliably and efficiently.
Overall planning, coordination of services and fire protection
Overall planning covering heating, ventilation, air-conditioning, sanitary and electrical systems; including coordination of services and fire protection for new-build and renovation projects.
Renovation and strategic building renewal
Renovation and strategic building renewal of buildings, with expert planning for technical systems and energy upgrades.
Energy consulting, certification and operational optimisation
Energy consulting and certification, operational optimisation and CO₂ reduction for sustainable, energy-efficient buildings.
Sustainable and energy-efficient building
Sustainable, energy-efficient building with planning for renewable energy and ecologically optimised building technology.
Trust & reputation

ranQ Trust Score of Wirkungsgrad Ingenieure AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of October 2026

Wirkungsgrad Ingenieure 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%
Wirkungsgrad Ingenieure AG scores 91.0 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.97.712%
  • 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%
Wirkungsgrad Ingenieure AG 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%
Wirkungsgrad Ingenieure AG scores 45.7 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.45.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Wirkungsgrad Ingenieure 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

Habsburgerstrasse 1a
6003 Lucerne
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
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-363.607.178
Founded
2012 · 14 years
Last commercial register change
June 20, 2025
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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