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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesMännedorfKoster AG Gebäudetechnik, Zweigniederlassung Männedorf
Koster AG Gebäudetechnik, Zweigniederlassung Männedorf Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Koster AG Gebäudetechnik, Zweigniederlassung Männedorf is a building services company offering planning, installation and maintenance of heating, ventilation, air conditioning, refrigeration, sanitary and MSRL systems. Services cover large and small installations, energy optimization, building automation, switchboard fabrication, and 24-hour service, repairs and maintenance contracts.

AI-generated
Offering

Products & services

Industry:Plumbing & Building Services
✓ Offered5
Heating
Heating systems planning, installation, renovation and maintenance, including heat pumps, underfloor heating, district heating connections, conventional systems, hybrid systems and emergency on-call service.
Plumbing
Sanitary systems for new builds and existing buildings, bathroom renovations, plumbing refurbishment, hygiene and water treatment, legionella prevention, water-damage emergency service and maintenance contracts.
Ventilation
Ventilation systems for residential, commercial and industrial buildings, including comfort ventilation, heat recovery, air-conditioned ventilation systems, SWKI-compliant hygiene maintenance, commissioning and measurement.
Air Conditioning and Refrigeration
Air conditioning and refrigeration systems for server rooms, offices, hospitality and retail spaces, with VRF systems, chillers, redundancy concepts, refrigerant service and remote monitoring.
Building Automation
Building automation and MSRL with planning, control cabinet construction, programming, energy optimisation, remote maintenance, alarm notification and vendor-independent integration of existing systems.
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4.1/5

Koster AG Gebäudetechnik, Zweigniederlassung Männedorf

Trust & reputation

ranQ Trust Score of Koster AG Gebäudetechnik, Zweigniederlassung Männedorf: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Koster AG Gebäudetechnik, Zweigniederlassung Männedorf scores 59.7 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.31.224%
  • 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.95.08%
Koster AG Gebäudetechnik, Zweigniederlassung Männedorf scores 87.1 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.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.82.07%
Koster AG Gebäudetechnik, Zweigniederlassung Männedorf 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%
Koster AG Gebäudetechnik, Zweigniederlassung Männedorf scores 80.0 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 35.80.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Koster AG Gebäudetechnik, Zweigniederlassung Männedorf reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 3.5 out of 5 stars from 55 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
3.5
of 5

Aggregated from 55 reviews across all connected sources

Sources
GGoogle3.555
★TrustpilotSoon
PProvenExpertSoon

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

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Comparisons

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Location

Emil-Staub-Strasse 2
8708 Männedorf
Opening hours
Mon
07:00 - 12:00, 13:00 - 16:30
Tue
07:00 - 12:00, 13:00 - 16:30
Wed
07:00 - 12:00, 13:00 - 16:30
Thu
07:00 - 12:00, 13:00 - 16:30
Fri
07:00 - 12:00, 13:00 - 16:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Branch
UID
CHE-225.328.676
Founded
2008 · 18 years
Last commercial register change
April 26, 2024
Employees
21 to 50
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.76.06%
  • 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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