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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint747,212 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureWindow constructionSurseefemafenster AG
femafenster AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

femafenster AG advises customers on, sells and installs windows and doors, including uPVC, timber-aluminium and composite windows, entrance doors and sliding doors. Its range also includes sun and insect protection, and it provides planning, coordination and service for new-build and renovation projects.

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Service area

Offering

Products & services

Industry:Window construction
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femafenster AG

Windows
Custom windows in various sizes, designs and finishes; PVC windows, PVC-aluminium windows, wood-aluminium windows, composite windows and window accessories.
Front doors
Custom front doors in aluminium, wood-aluminium and wood; with various models, side panels, fanlights, handles, colours and safety locking systems up to RC2.
Lift-and-slide doors
Lift-and-slide doors and large-format glazing in PVC, PVC-aluminium and wood-aluminium; also with electric drives, low thresholds and barrier-free solutions.
Consulting / Sales
On-site personal consultation for new builds and renovations; determining requirements, an exact budget, and on request coordination of further trades as well as project planning and cost-monitored construction management.
Installation and quality
Professional installation of windows and doors by a qualified, trained and certified installation team, focused on function, durability and service.
Installation in new builds
Qualified premium installation for fitting windows, doors and large-format elements in new builds, including neat workmanship and correct building connection.
Installation in renovations
Window replacement and refurbishment in renovations with measurements, scheduling, careful dismantling, clean installation, inspection in accordance with the acceptance report and subsequent cleaning.
Service / Warranty
Maintenance after installation, solutions for defective hardware and seals, emergency glazing in case of broken glass, retrofitting cat flaps and advice on insect protection and cleaning.
Solar shading
Solar shading systems for windows with jalousies, Raffstores, roller shutters, interior blinds and window shutters; some with smart home control and combinable with insect protection.
Insect protection
Custom insect protection systems for windows and balcony doors with rotating frames, insect screen roller blinds, tension frames and sliding frames; mounted directly on the window or in the roller shutter casing.
Trust & reputation

ranQ Trust Score of femafenster AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of November 2026

femafenster AG scores 75.2 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.69.024%
  • 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.94.410%
  • 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%
femafenster AG scores 89.3 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.70.07%
femafenster 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%
femafenster AG scores 10.0 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 35.10.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

femafenster AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.4 out of 5 stars from 40 customer reviews. The data basis is 96%, so the score is backed by part of the criteria. As of November 2026.

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

Reviews

Aggregated rating

Aggregated rating
4.4
of 5

Aggregated from 40 reviews across all connected sources

Sources
GGoogle4.440
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Allmendstrasse 4
6210 Sursee
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.349.835
Founded
2008 · 18 years
Last commercial register change
March 6, 2020
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.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

    Active in 2 of 26 cantons · 2 municipalities

    • BLFrenkendorf
    • LUSursee

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