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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureSpecialized Construction ActivitiesHochdorf4B AG
4B AG Logo
Verified· 4 sourcesTrust Score
Summary

About the company

4B AG designs and manufactures windows, doors and façade systems and provides services such as spare parts, maintenance and customer consulting. The product range includes wood–metal window systems, sliding and entrance doors, and post-and-beam façade systems, and the company offers planning resources (CAD/BIM) for architects and planners.

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Offering

Products & services

Industry:Specialized Construction Activities
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3.8/5

4B AG

✓ Offered6
Windows
Wood-metal windows for renovation and new build, including renovation windows RF1 design, window system NF1 as well as accessories and window design.
Doors
Front doors and balcony doors made of wood-metal and aluminium, with versions such as front door HT2 and balcony door NF1 for new build and renovation.
Sliding doors
Sliding doors made of wood-metal with the variants ST2 and PS1, plus accessories, handles, textured glass and different opening variants.
Facades
Facade solutions with post-and-transom system FS2, modular facade systems and custom elements made of wood, metal and glass.
Window and facade service
Maintenance, repair, spare parts, service appointments and emergency service for windows, sliding doors and front doors, including glass, hardware, seals and break-in repairs.
Solutions for barrier-free construction, security and smart home
Threshold solutions, burglar protection up to RC2, intelligent glass and Smart-Home-Ready solutions for connectable, comfortable building envelopes.
Trust & reputation

ranQ Trust Score of 4B AG: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 100% · As of October 2026

4B AG scores 30.7 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.0.024%
  • 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.52.910%
  • 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.95.08%
4B AG scores 96.8 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.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.100.07%
4B AG scores 86.7 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).86.722%
4B AG scores 66.7 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 35.100.04%
  • Media authority: Quality and number of editorial mentions, weighted by the importance of the source, plus the recency of the latest high-quality mention.33.34%
Qualifications+0.00

4B AG reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 1.0 out of 5 stars from 7 customer reviews. As of October 2026.

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

Reviews

Aggregated rating

Aggregated rating
1
of 5

Aggregated from 7 reviews across all connected sources

Sources
GGoogle17
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

August 29, 2025Media
CEO von 4B Hochdorf tritt nach Übernahme zurück
zentralplus.ch
August 29, 2025Media
CEO-Wechsel bei 4B: Die dänische Leitung übernimmt die Führung
luzernerzeitung.ch
December 20, 2024Media
Nach 130 Jahren in Hochdorf: Dänen kaufen Luzerner Fensterbauer 4B
blick.ch
December 19, 2024Media
4B wird an Dovista S/A verkauft
seetalerbote.ch

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Location

An der Ron 7
6280 Hochdorf
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.973.376
Founded
1962 · 64 years
Last commercial register change
July 6, 2026
Employees
More than 500
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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