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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryIndustryMechanical Engineering IndustryZurichCTA AG, Zweigniederlassung Zürich
CTA AG, Zweigniederlassung Zürich Logo
Verified· 3 sourcesTrust Score
Summary

About the company

CTA AG, Zweigniederlassung Zürich develops, manufactures, installs and services heating and cooling systems such as heat pumps, air-conditioning units and chillers. The company also provides after-sales services, maintenance and technical support for private and professional customers.

AI-generated
Offering

Products & services

Industry:Mechanical Engineering Industry
✓ Offered7
Domestic Heat Pumps
Domestic heat pumps for single-family and multi-family homes, using air, ground or groundwater; planning, advice, installation and operation with regional service.
Heat Pumps and Refrigeration for Professional Partners
Heat pumps, chillers, air-conditioning units and integrated system solutions for planners and installers; design, products, references and regional maintenance.
Air-Conditioning Units
Air-conditioning units for heating and cooling applications in buildings; for professional partners with uses ranging from small to medium projects and IT environments.
Chillers
Chillers for cold-water production in air-conditioning, process and IT applications; standard units and project-specific solutions for professional partners.
Industrial Heat Pumps
Industrial heat pumps for reversible applications with hot- and cold-water production; for professional projects and integrated system solutions.
Fan Coils
Indoor units for cold-water connection to large heat pumps and chillers; for building air conditioning in professional applications.
Service and Maintenance
Maintenance, repairs, service contracts and warranty extension for heat pumps, air-conditioning systems and chillers; regional support and fault service.
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4.1/5

CTA AG, Zweigniederlassung Zürich

Trust & reputation

ranQ Trust Score of CTA AG, Zweigniederlassung Zürich: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

CTA AG, Zweigniederlassung Zürich scores 56.8 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.73.124%
  • 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.35.310%
  • 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.35.08%
CTA AG, Zweigniederlassung Zürich scores 89.1 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.90.07%
CTA AG, Zweigniederlassung Zürich scores 85.0 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
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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%
CTA AG, Zweigniederlassung Zürich scores 100.0 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 35.100.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

CTA AG, Zweigniederlassung Zürich reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 3 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 3 reviews across all connected sources

Sources
GGoogle53
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Freilagerstrasse 40
8047 Zurich
Opening hours
Mon
07:30 - 12:00, 13:30 - 17:00
Tue
07:30 - 12:00, 13:30 - 17:00
Wed
07:30 - 12:00, 13:30 - 17:00
Thu
07:30 - 12:00, 13:30 - 17:00
Fri
07:30 - 12:00, 13:30 - 16:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Branch
UID
CHE-251.305.385
Founded
1990 · 36 years
Last commercial register change
May 10, 2023
Employees
51 to 100
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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