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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceHergiswil B. WillisauMüller Fenster und Türen AG
Müller Fenster und Türen AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

The core activity of Müller Fenster und Türen AG consists of the manufacture, delivery and installation of windows, doors and flooring, as well as the execution of renovations and surface treatments. Specifically, this includes: the manufacture and installation of plastic windows, aluminum window shutters and doors; the delivery and installation of entrance doors, fire doors, room doors and apartment closure doors; the laying of vinyl, laminate and parquet floors; and the execution of renovations and surface treatments, including the painting of wood surfaces.

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Products & services

Industry:Building MaintenanceInterior Construction
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Müller Fenster und Türen AG

✓ Offered8
Window delivery and installation
PVC windows for new builds and renovations; delivery and installation, outdoors also with aluminium or foil finish.
Door delivery and installation
House entrance doors in aluminium and timber, fire-protection doors, interior doors, apartment entrance doors and cellar doors; delivery, installation and replacement of existing doors.
Window shutters and sun protection
Aluminium window shutters for new builds and renovations; advice, delivery and installation as well as replacement of existing louvered shutters.
Floor coverings
Vinyl, laminate and parquet flooring; delivery and fitting, including advice on terrace and balcony flooring.
Interior fit-out
Walls and ceilings made of Fermacell boards, floors with loose fill and screed elements as well as various panelling work for indoor and outdoor areas.
Insect protection
Insect protection solutions with roller, tension frames, pleated blinds or sliding doors; selection and suitable installation according to requirements.
Surface treatment of timber components
Treatment of wooden panelling, exterior cladding, exterior façades and soffits using a coating machine.
Table and chair rental
Rental of up to 10 round tables and 100 chairs; prices according to the price list.
Trust & reputation

ranQ Trust Score of Müller Fenster und Türen AG: 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.

Müller Fenster und Türen 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%
Müller Fenster und Türen AG scores 79.8 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.86.512%
  • 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%
Müller Fenster und Türen AG scores 85.0 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).85.022%
Müller Fenster und Türen AG scores 5.7 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 35.5.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Müller Fenster und Türen 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 October 2026.

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

Knowledge

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Location

Dorfstrasse 35
6133 Hergiswil B. Willisau
Opening hours
Mon
07:00 - 12:00, 13:00 - 17:00
Tue
07:00 - 12:00, 13:00 - 17:00
Wed
07:00 - 12:00, 13:00 - 17:00
Thu
07:00 - 12:00, 13:00 - 17:00
Fri
07:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-476.974.586
Founded
2016 · 10 years
Last commercial register change
March 18, 2026
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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