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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,837 companies indexed · Last updated: today
DirectoryReal EstateProperty ManagementBiel/BienneKohler & Kohler GmbH
Kohler & Kohler GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Kohler & Kohler GmbH is the provision of services in the electrical and energy sector, particularly in the areas of: electrical installations, solar systems (photovoltaics), smart home solutions, energy management, electromobility (charging solutions), power storage, electrical controls, repair and maintenance of electrical systems, and burglar alarm and security systems. The company also offers solutions for self-consumption of generated energy (ZEV) and energy consumption optimization.

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Products & services

Industry:Property Management
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4.3/5

Kohler & Kohler GmbH

✓ Offered10
Electrical Installations
Planning and delivery of modern electrical installations for renovations, residential buildings, retail fit-outs and commercial premises, including power, lighting, low-voltage systems, fibre optics/FTTH and consulting.
Solar and Photovoltaic Systems
Planning, implementation and commissioning of solar systems for new and existing buildings, as roof-mounted, flat-roof or in-roof installations, including advice on subsidies.
Building Automation (Smart Home)
Building automation for lighting, shading, heating, ventilation, audio, security and app control, with Loxone-based networking and operation.
Energy Management
Intelligent control of heating, ventilation, air conditioning and shading to reduce energy consumption, with recording, visualisation and optimisation of energy flows.
Collective Self-Consumption Solutions (ZEV)
Design, implementation, registration and billing of collective self-consumption schemes for multi-family buildings and sites, including metering infrastructure and contract management.
Battery Storage Systems
Battery storage for surplus solar power so electricity can be used in the evening, at night or when needed; optionally with a blackout-capable solution.
EV Charging Stations
Planning, installation, commissioning and maintenance of charging solutions for single-family homes, multi-family buildings and businesses, including load management and billing.
Repairs and Maintenance
Repair and maintenance of electrical systems, lighting, sockets, switches, ventilation units, outdoor lighting, hot-water connections, plus spare parts and extensions.
Electrical Inspections
Periodic inspections, change-of-ownership inspections and general inspections of electrical installations through to the safety certificate, including residential and commercial properties.
Intrusion Alarm Systems
Tailored security systems with control unit, perimeter protection, interior protection, glass-break detectors, remote alerts and video surveillance for existing and new properties.
Trust & reputation

ranQ Trust Score of Kohler & Kohler GmbH: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Kohler & Kohler GmbH scores 92.2 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.92.924%
  • 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.93.810%
  • 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.88.08%
Kohler & Kohler GmbH scores 67.8 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.64.612%
  • 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%
Kohler & Kohler GmbH 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%
Kohler & Kohler GmbH scores 6.0 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 35.6.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Kohler & Kohler GmbH reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 5.0 out of 5 stars from 39 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
5
of 5

Aggregated from 39 reviews across all connected sources

Sources
GGoogle539
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Haldenstrasse 3A
2502 Biel/Bienne
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
Limited Liability Company
UID
CHE-437.958.112
Founded
2021 · 5 years
Last commercial register change
October 6, 2021
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.
88.0
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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