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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryFinance & InsuranceHolding CompaniesWillisauE. Zimmermann Holding AG
E. Zimmermann Holding AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

E. Zimmermann Holding AG manufactures wooden and wood‑metal windows and doors for new construction and renovation, and produces special shapes such as round, slanted, or oval windows. Services include production, maintenance and repair, glass replacement, burglary‑resistant features and insect protection.

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Offering

Products & services

Industry:Holding Companies
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3.8/5

E. Zimmermann Holding AG

✓ Offered11
Timber windows
Timber windows for new builds and conversions, available in round, angled or oval special shapes as desired.
Timber-metal windows
Windows made of timber and metal for new builds and conversions, including virtually all special shapes to customer specification.
Sliding doors
Sliding doors as a product for residential and commercial use, offered alongside windows and other door solutions.
Specialty windows
Specialty windows for specific requirements and formats, complementing the standard range for windows and doors.
Fire protection windows
Fire protection windows for applications with increased requirements for preventive fire protection.
Timber-metal doors
Timber-metal doors as a complementary door solution to the window range, for new builds and conversions.
Production
Production of Swiss windows made of timber and timber-metal, also for special shapes and individual designs.
Service / Repairs
Service and repairs for windows and doors, as additional support after installation or in the event of damage.
Glass break
Glass break service for defective glazing and replacement of damaged glass elements.
Burglary protection
Burglary protection for windows and doors to improve building security.
Insect protection
Insect protection for windows and doors, as an additional solution for residential and commercial buildings.
Trust & reputation

ranQ Trust Score of E. Zimmermann Holding AG: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

E. Zimmermann Holding AG scores 63.5 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.73.124%
  • 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.35.310%
  • 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.70.08%
E. Zimmermann Holding AG scores 64.1 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.50.012%
  • 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%
E. Zimmermann Holding 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%
E. Zimmermann Holding AG scores 8.3 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 35.8.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

E. Zimmermann Holding AG reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 3 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 3 reviews across all connected sources

Sources
GGoogle53
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Menzbergstrasse 46
6130 Willisau

At a glance

Legal form
Corporation
UID
CHE-467.626.229
Founded
2023 · 3 years
Last commercial register change
November 21, 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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