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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryCrafts & TradesGarageAlterswil FrTestair AG
Testair AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Testair AG provides environmental services, including maintenance and repair of exhaust-gas and climate-control equipment and servicing of wastewater systems. It also operates a garage offering vehicle repairs, servicing and paintwork, as well as a metalworking shop.

AI-generated
Presence

Service area

Offering

Products & services

Industry:Garage
✓ Offered9
Vehicle repairs and service
Repairs and service for all makes, including inspections, brake and chassis checks, exhaust and air-conditioning service, and vehicle provision for the MFK.
Tire, battery and replacement car service
Tire and battery service, replacement car service and Pneuhotel for ongoing maintenance and interim storage of tires.
Bodywork and painting
Bodywork and painting jobs for vehicle damage, restoration and optical reconditioning.
Sale of new and used cars
Sale of new cars and used vehicles, brand-independent within the scope of the garage offering.
Wastewater technology
Sales, customer service, consulting, as well as maintenance and service work for wastewater systems, in particular Thommen Furler and Securomat.
Maintenance of exhaust and diesel smoke testers
Maintenance and repair work for exhaust and diesel smoke testers, authorized for various devices and with METAS authorization for sealing.
Air-conditioning maintenance for service units
Customer service and maintenance work for air-conditioning maintenance units as part of device maintenance.
Steelwork and sheet-metal work
Steelwork and sheet-metal work in steel, INOX and aluminium, from planning to the finished product; including repair welding, railings and handrails.
Small-series production in apparatus construction
Small-series production in apparatus construction with sheet-metal processing and modern welding equipment, developed from prototype construction.
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4.1/5

Testair AG

Trust & reputation

ranQ Trust Score of Testair AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of November 2026

Without public customer reviews the score stays capped.

Testair AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
Testair 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%
Testair 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%
Testair AG scores 2.3 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 35.2.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Testair AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of November 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Schlossacher 3
1715 Alterswil Fr

At a glance

Legal form
Corporation
UID
CHE-103.851.213
Founded
1991 · 35 years
Last commercial register change
June 2, 2021
Employees
1 to 10

Active in 1 of 26 cantons · 1 municipality

  • FRTafers
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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