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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesElectrical Planning & InstallationRussikonW. Altorfer AG
W. Altorfer AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of W. Altorfer AG is the planning, installation, maintenance and cleaning of ventilation systems, as well as the provision of services in the areas of air conditioning and sheet metal work.

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Offering

Products & services

Industry:Electrical Planning & Installation
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4.1/5

W. Altorfer AG

Sheet Metal Work
Specialized Construction Installations
✓ Offered5
Ventilation service
Maintenance, cleaning, disinfection and upkeep of ventilation systems; airflow measurement, camera inspection as well as cleaning of systems in residential, commercial and catering properties.
Ventilation cleaning
Cleaning of ventilation engineering systems in commercial kitchens, multi-family houses, garages, civil protection centres, sports centres, restaurants, hotels, shopping centres and office and commercial buildings.
Sheet-metal work
Manufacture of ventilation components as well as rainwater downpipes, gutters, dormer cladding, parapet copings, chimney casings, seals, liquid plastic waterproofing and lightning protection on the roof.
Dry ice cleaning
Cleaning of stubborn oil, grease, paint and varnish residues as well as other soiling; gentle, environmentally friendly process without waste by-product.
WALMA Degreaser & Chrome steel care
Cleaning agents for removing greasy soiling as well as caring for chrome steel surfaces; available via the online shop or for pickup on site.
Trust & reputation

ranQ Trust Score of W. Altorfer AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

W. Altorfer 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%
W. Altorfer AG scores 85.5 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.55.07%
W. Altorfer AG scores 83.3 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).83.322%
W. Altorfer AG scores 57.1 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 35.57.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

W. Altorfer AG 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.

Knowledge

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Comparisons

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Location

Madetswilerstrasse 37
8332 Russikon
Opening hours
Mon
07:00 - 11:45, 13:15 - 16:30
Tue
07:00 - 11:45, 13:15 - 16:30
Wed
07:00 - 11:45, 13:15 - 16:30
Thu
07:00 - 11:45, 13:15 - 16:30
Fri
07:00 - 11:45, 13:15 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.890.247
Founded
1983 · 43 years
Last commercial register change
November 17, 2017
Employees
1 to 10
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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