ranQ
ranQ
ranQ
DirectoryIndustriesPlacesKnowledgeComparisonsSoon
Sign inCheck visibility
ranQHSG Startup LabelRecognised by the
HSG Startup Label

The leading AI company directory, built to boost AI visibility.

DEENFRIT
Product
  • Pricing
  • Directory
  • Industries
  • Trust Score
Company
  • About
  • Partner program
  • Contact
  • Legal
© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureInterior ConstructionKlingnauErnst Keller AG Schreinerei und Fensterbau
Ernst Keller AG Schreinerei und Fensterbau Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Ernst Keller AG is the production and distribution of wooden windows and wooden metal windows, including related services such as window service, repairs, burglary protection and insect protection.

AI-generated
Offering

Products & services

Industry:Interior Construction
✓ Offered6
Window production
Window production using CNC technology at the works in Klingnau, including made-to-measure window solutions and manufacturing for more demanding window constructions.
Timber windows
Timber windows for new builds and replacement, with natural material properties, regional timber and a wide range of shapes, colours and designs.
Wood-aluminium windows
Wood-aluminium windows with a timber interior and an aluminium exterior, designed for durability, the weather side, large components and separate colour design for inside and outside.
Window service and repairs
Window service including inspection of materials, replacement of seals and hardware, renewal of the sealing system, as well as maintenance, care and repairs to extend service life.
Burglar protection
Burglar-resistant windows and retrofitting of existing windows and doors, including assessment of the situation, advice on options and selection of suitable measures.
Insect protection
Insect protection solutions for windows and doors, including hanging screens, roller blinds, insect protection, pivot and swing doors as well as sliding doors for new and existing elements.
LeadhubOutbound Leads by COHAGA

Looking for direct email addresses and phone numbers?

Leadhub delivers verified contact details and decision-makers from over 750,000 Swiss companies — management, procurement, marketing, HR.

Discover Leadhub
4.1/5

Ernst Keller AG Schreinerei und Fensterbau

Trust & reputation

ranQ Trust Score of Ernst Keller AG Schreinerei und Fensterbau: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

Ernst Keller AG Schreinerei und Fensterbau 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%
Ernst Keller AG Schreinerei und Fensterbau 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%
Ernst Keller AG Schreinerei und Fensterbau 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%
Ernst Keller AG Schreinerei und Fensterbau scores 11.1 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 35.11.14%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Ernst Keller AG Schreinerei und Fensterbau 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

No knowledge articles yet

Once Ernst Keller AG Schreinerei und Fensterbau has claimed this profile, we'll publish editorial articles and case studies here together.

Get started
Comparisons

Ernst Keller AG Schreinerei und Fensterbau in comparison

Soon

Industry comparisons are coming soon

We're preparing industry comparisons that rank Ernst Keller AG Schreinerei und Fensterbau by reviews, experience and specialisations.

Is this your company?

Claim the company profile of Ernst Keller AG Schreinerei und Fensterbau to make its contact details visible. With a plan we additionally create and publish industry comparisons, articles and much more.

Secure profile

Location

Sommerweg 23
5313 Klingnau

At a glance

Legal form
Corporation
UID
CHE-102.271.579
Founded
1960 · 66 years
Last commercial register change
February 28, 2019
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.100.06%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

    Similar companies

    BF
    Baer Fensterbau AG
    Rothrist
    DR
    Die Reparaturprofis GmbH
    Birrhard
    DF
    Di Franco Fenster GmbH
    Wildegg
    SS
    Schmid Schreinerei GmbH
    Villmergen
    FA
    Fenstersanierungs AG Mittelland
    Seon
    RF
    Rust Fenster Service GmbH
    Zufikon
    DF
    Domeisen Fenster AG
    Mülligen
    BC
    Baer création AG
    Brittnau