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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesSpecialized Construction InstallationsErmenseeOtto Lang AG Industriespenglerei & Lüftungssysteme
Otto Lang AG Industriespenglerei & Lüftungssysteme Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Lang AG is the manufacture and supply of products and solutions in the field of air, climate and dust removal technology as well as general industrial sheet metal work, in particular: pipe material, flat channel systems, ventilation ducts, kitchen exhaust hoods and additional products. The company also offers assembly and services, focusing on high quality, energy and resource efficiency, as well as sustainable business relationships.

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Products & services

Industry:Specialized Construction Installations
✓ Offered7
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Otto Lang AG Industriespenglerei & Lüftungssysteme

Ventilation ducts
Ventilation ducts, insert distribution boxes, and matching accessories for air, climate, and dust extraction technology.
Pipe material
Round air ducts with lip sealing, pipes, shaped and pressed parts, dampers, silencers, valves, weather-protection grilles, and flexible hoses.
Flat duct systems
Flat ducts and fittings made of galvanised sheet steel for installation under screed, in suspended ceilings, or as cable ducting.
Kitchen extract hoods
Kitchen extract hoods in various designs, made to measure, with standard filters and built-in lights, in chromed steel or Aluman.
Additional products
Components such as segment dampers, duct silencers, rectangular weather-protection grilles, roof cowls, and rain caps in various materials.
Installation
Installation of larger custom-made special products directly at the customer’s site, on request.
Consulting
Consulting on products, manufacturing, and custom-made solutions, including for non-standard problem situations.
Trust & reputation

ranQ Trust Score of Otto Lang AG Industriespenglerei & Lüftungssysteme: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

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Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Otto Lang AG Industriespenglerei & Lüftungssysteme 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.
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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%
Otto Lang AG Industriespenglerei & Lüftungssysteme scores 89.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
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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.70.07%
Otto Lang AG Industriespenglerei & Lüftungssysteme scores 83.3 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).83.322%
Otto Lang AG Industriespenglerei & Lüftungssysteme scores 28.6 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
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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 35.28.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Otto Lang AG Industriespenglerei & Lüftungssysteme 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 October 2026.

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

Knowledge

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Location

Kirchfeld 1
6294 Ermensee

At a glance

Legal form
Corporation
UID
CHE-114.328.358
Founded
2008 · 18 years
Last commercial register change
April 22, 2026
Employees
11 to 20
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.100.06%
  • 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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