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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryConstruction & ArchitectureBuilding MaintenanceOeschgenCohatec AG
Cohatec AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Cohatec AG is the planning, installation, maintenance and repair of systems in the areas of sanitation, heating, ventilation, air conditioning and refrigeration. This includes in particular: Sanitary work (bathroom renovation, new construction, water softening systems, water treatment), heating renovation, heat pumps, pellets, ventilation systems (residential ventilation, hygiene ventilation, air purifiers, dehumidifiers), air conditioning and refrigeration systems (air conditioning units, refrigeration systems), emergency service and maintenance for all mentioned systems. The company thus offers comprehensive services for building technology.

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Offering

Products & services

Industry:Building MaintenancePlumbing & Building Services
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Cohatec AG

✓ Offered8
Sanitary installations
Bathroom conversions, new installations, renovations, water treatment, boiler replacement and sanitary emergency repairs for private and commercial clients.
Heating systems
Heating replacements, heat pumps, heating optimisation, maintenance and installation of district heating, wood, pellet and heat pump systems.
Ventilation systems
Residential ventilation, ventilation for gastronomy and commercial premises, retrofit of ventilation systems as well as installation, maintenance and hygiene inspections.
Air conditioning and refrigeration
Room air-conditioning units, VRF and multi-split systems, cold rooms, frozen storage rooms as well as commercial and industrial refrigeration with maintenance and leak-tightness testing.
Service and maintenance
Maintenance, repair and inspection for sanitary, heating, ventilation, air-conditioning and refrigeration systems, as a one-off job or a maintenance contract.
24/7 emergency service
24/7 standby service for burst water pipes, heating failures, faulty air-conditioning units and other building-technology faults.
Water treatment and descaling
Water softening systems, drinking-water filters, boiler descaling, filter changes and protection of fittings, boilers and appliances against hard water.
Rental equipment for building services
Mobile heating units, air dehumidifiers and mobile boilers for bridging periods in case of heating failure or water damage.
Trust & reputation

ranQ Trust Score of Cohatec AG: 4.4 out of 5.0

Trust Score4.4/ 5.0

Very high

x

Data basis 96% · As of October 2026

Cohatec AG scores 85.8 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.83.224%
  • 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.84.710%
  • 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%
Cohatec AG scores 85.5 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.55.07%
Cohatec 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%
Cohatec AG scores 22.9 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 35.22.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Cohatec AG reaches a ranQ Trust Score of 4.4 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.8 out of 5 stars from 27 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
4.8
of 5

Aggregated from 27 reviews across all connected sources

Sources
GGoogle4.827
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Birkenweg 455
5072 Oeschgen
Opening hours
Mon
07:30 - 17:00
Tue
07:30 - 17:00
Wed
07:30 - 17:00
Thu
07:30 - 17:00
Fri
07:30 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-106.359.954
Founded
1993 · 33 years
Last commercial register change
February 3, 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.
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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