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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesSheet Metal WorkDüdingenackermann AG
ackermann AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

ackermann AG is a specialist contractor for building envelopes, building services engineering and solar systems, providing planning, installation and refurbishment services for roofing, façades, plumbing and heating, as well as photovoltaic and solar-thermal systems.

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Offering

Products & services

Industry:Sheet Metal WorkSolar & Photovoltaics
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4.5/5

ackermann AG

✓ Offered11
Building envelope
Building envelopes for new builds and renovations, with insulation, weather protection, durability and energy upgrades; includes roofing, façades, sheet-metal work, lightning protection and green roofs.
Building services
Building services for heating, comfort ventilation and sanitary systems; planning, implementation, coordination, as well as maintenance and servicing for energy-efficient, comfortable buildings.
Solar system
Planning and installation of photovoltaic and solar thermal systems for single-family homes, multi-family houses, commercial properties and major projects.
Sheet-metal work
Classic sheet-metal work including gutters, snow guards, downpipes, edge trims and chimney caps; processing of titanium-zinc, aluminium, stainless steel and copper sheet.
Roofing
Roofing for pitched and flat roofs, gable, mansard and hip roofs; new builds, renovations and roof refurbishments including insulation and green flat roofs.
Façade
Façade planning and installation for ventilated façades, sheet-metal façades and brick façades; including substructure, advisory services, material selection and checks for damage and soiling.
Lightning protection
Planning, installation and inspection of lightning protection systems according to legal lightning protection standards and current technical findings.
Green roof
Extensive and intensive green roofs with consultation, professional implementation, as well as care and maintenance; including inspection, weed removal and unobstructed water drainage.
Comfort ventilation
Comfort ventilation systems for apartments and buildings, including planning, implementation, coordination with other companies, as well as maintenance and servicing.
Heating
Heating systems for replacement and new builds, with solutions for pellets, oil, gas, solar energy and ground-source heat; combined with modern controls and advisory services.
Plumbing
Plumbing installations for bathrooms, kitchens and buildings, including water supply, wastewater disposal, bathroom renovations, bathroom planning, 3D plans, site management and coordination.
Trust & reputation

ranQ Trust Score of ackermann AG: 4.5 out of 5.0

Trust Score4.5/ 5.0

Excellent

x

Data basis 96% · As of October 2026

ackermann AG scores 82.6 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.78.524%
  • 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.78.610%
  • 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.100.08%
ackermann 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%
ackermann 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%
ackermann 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 35.40.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

ackermann AG reaches a ranQ Trust Score of 4.5 out of 5.0 — rated «Excellent». The rating draws, among other things, on 4.7 out of 5 stars from 21 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
4.7
of 5

Aggregated from 21 reviews across all connected sources

Sources
GGoogle4.721
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Chännelmattstrasse
3186 Düdingen
Opening hours
Mon
07:30 - 12:00, 13:30 - 17:00
Tue
07:30 - 12:00, 13:30 - 17:00
Wed
07:30 - 12:00, 13:30 - 17:00
Thu
07:30 - 12:00, 13:30 - 17:00
Fri
07:30 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.045.702
Founded
1975 · 51 years
Last commercial register change
July 30, 2018
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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