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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,701 companies indexed · Last updated: today
DirectoryReal EstateFacility Management & CleaningAu ZhLuft AG
Luft AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Luft AG is the professional cleaning and maintenance of ventilation systems, particularly in the areas of: kitchen exhaust, restaurant ventilation, comfort ventilation, bathroom ventilation, tumble dryer exhaust and industrial ventilation. The company thus offers services to maintain and improve air quality in various environments.

AI-generated
Offering

Products & services

Industry:Facility Management & Cleaning
✓ Offered7
Ventilation system cleaning and maintenance
Professional cleaning and maintenance of ventilation systems for commercial and private premises, including regular inspections and maintenance.
Kitchen exhaust cleaning
Cleaning and inspection of kitchen exhaust systems in commercial kitchens, with regular maintenance intervals to reduce fire risk.
Restaurant ventilation
Cleaning of ventilation systems in restaurants and eateries to maintain air quality, room climate and the performance of the system.
Comfort ventilation systems
Inspection and cleaning of comfort ventilation systems and Minergie installations to improve indoor air and maintain system function.
Bathroom ventilation
Cleaning of bathroom and damp-room ventilation systems to remove contamination, mould issues and impairments to exhaust air function.
Tumbler exhaust
Cleaning of tumbler exhaust pipes and exhaust ducts to clear blockages, ensure drying operation and extend the service life of the unit.
Industrial duct system cleaning
Cleaning of complete duct systems in industrial facilities, if required with disinfection, to improve the energy balance and prevent micro-organisms.
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4.2/5

Luft AG

Trust & reputation

ranQ Trust Score of Luft AG: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

Luft AG scores 76.1 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.86.524%
  • 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.72.110%
  • 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%
Luft 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%
Luft 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%
Luft AG scores 2.6 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 35.2.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Luft AG reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 16 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 16 reviews across all connected sources

Sources
GGoogle516
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Johannes-Hirt-Strasse 31
8804 Au Zh
Opening hours
Mon
08:00 - 12:00, 13:30 - 17:00
Tue
08:00 - 12:00, 13:30 - 17:00
Wed
08:00 - 12:00, 13:30 - 17:00
Thu
08:00 - 12:00, 13:30 - 17:00
Fri
08:00 - 12:00, 13:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-110.515.654
Founded
2004 · 22 years
Last commercial register change
September 4, 2023
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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