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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryCrafts & TradesSpecialized Construction InstallationsRootWalter Hirsiger AG
Walter Hirsiger AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Walter Hirsiger AG is a company for ventilation and climate systems, providing planning, installation and maintenance of ventilation, air-conditioning and refrigeration technology. Services include duct fabrication, ventilation cleaning, heat recovery, swimming-pool technology and fire-protection solutions.

AI-generated
Offering

Products & services

Industry:Specialized Construction Installations
✓ Offered5
Ventilation and air-conditioning systems
Planning, construction, maintenance and repair of ventilation and air-conditioning systems for industrial and public building projects, hospitals, banks, commercial kitchens, laboratories and the food service and hospitality industry.
Duct fabrication
In-house production of ventilation ducts, fittings and special components made to measure, with precisely fitting solutions, high flexibility and delivery on schedule.
Ventilation cleaning
Cleaning of ventilation and air-conditioning systems using a dry process with free inspection, to reduce dust exposure and for healthy indoor air quality.
Fire protection
Planning and implementation of fire protection concepts, smoke and heat exhaust systems, and fire protection insulation for air-handling systems.
Service, maintenance and fault service
Maintenance of ventilation and air-conditioning systems, preserving the value of the installations and energy efficiency, as well as rapid fault service in the event of failures.
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4.2/5

Walter Hirsiger AG

Trust & reputation

ranQ Trust Score of Walter Hirsiger AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Walter Hirsiger AG scores 65.6 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
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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.62.424%
  • 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.63.210%
  • 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.78.08%
Walter Hirsiger 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%
Walter Hirsiger 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%
Walter Hirsiger AG scores 65.7 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 35.65.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Walter Hirsiger AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.2 out of 5 stars from 11 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
4.2
of 5

Aggregated from 11 reviews across all connected sources

Sources
GGoogle4.211
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Geretsmatt 3b
6037 Root

At a glance

Legal form
Corporation
UID
CHE-102.433.764
Founded
1978 · 48 years
Last commercial register change
March 13, 2025
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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