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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryIndustryGlass, Ceramics, Stone & Construction Materials IndustryWädenswilFenster Doktor AG
Fenster Doktor AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Fenster Doktor AG is the repair, maintenance and renovation of windows and doors, including glass replacement, glass polishing, ventilation, condensation, burglary protection, emergency repair, seals, silicone joints, wood repairs and energy efficiency measures. The company offers its services independently of the manufacturer, material, age and size of the windows and doors and has mobile service units on the road in German-speaking Switzerland.

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Offering

Products & services

Industry:Glass, Ceramics, Stone & Construction Materials Industry
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4.4/5

Fenster Doktor AG

Plastics Industry
✓ Offered6
Window repair and replacement
Repair, adjustment and replacement of windows, roof windows and doors; repair of fittings, handles and hinges, replacement of seals and on-site functional testing.
Window service and seal replacement
Maintenance and seal service for wooden, plastic and aluminium windows, as well as lift-and-slide doors, patio doors and roof windows; replacement of rubber seals, silicone joints and a functional check.
Glass replacement and removing glass scratches
Replacement of damaged window panes as well as removal of glass scratches; advice on choosing glass for sound insulation, safety and insulation, sometimes with special polishing procedures.
Break-in repair and security check
Immediate help after break-in damage to windows and doors, emergency glazing and restoring functionality; on-site security check with retrofitted solutions such as lockable handles and additional locking systems.
Partial replacement of wooden frames
Repair and partial replacement of damaged wooden window frames; routing out damaged areas, fitting repair sections, puttying, sanding, priming and painting.
Cat flaps and insect screens
Installation of cat flaps in windows and glass doors as well as made-to-measure insect protection systems; also removable, suitable for rental apartments and various types of glazing.
Trust & reputation

ranQ Trust Score of Fenster Doktor AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

Fenster Doktor AG scores 88.1 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.79.224%
  • 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.100.010%
  • 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.100.08%
Fenster Doktor AG scores 82.0 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.83.012%
  • 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%
Fenster Doktor 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%
Fenster Doktor AG scores 45.7 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 35.45.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Fenster Doktor AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.6 out of 5 stars from 177 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
4.6
of 5

Aggregated from 177 reviews across all connected sources

Sources
GGoogle4.6177
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Rütihof 6
8820 Wädenswil
Opening hours
Mon
07:30 - 11:45, 13:30 - 17:00
Tue
07:30 - 11:45, 13:30 - 17:00
Wed
07:30 - 11:45, 13:30 - 17:00
Thu
07:30 - 11:45, 13:30 - 17:00
Fri
07:30 - 11:45, 13:30 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-256.864.700
Founded
2017 · 9 years
Last commercial register change
March 4, 2026
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

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