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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryCrafts & TradesElectrical Planning & InstallationZurichCAL Gebrüder Calendo AG
CAL Gebrüder Calendo AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

CAL Gebrüder Calendo AG provides electrical installation and electrical planning services along with related consulting. Its offerings include telematics, alarm and security systems, smart home solutions, e-mobility, photovoltaic systems and a 24-hour on-call service.

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Offering

Products & services

Industry:Electrical Planning & Installation
✓ Offered
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CAL Gebrüder Calendo AG

7
Electrical installation
Power and low-voltage systems for industrial, commercial, service and residential buildings; analysis, consulting, project planning and execution of new-build, conversions, renovations and maintenance projects.
Electrical planning and consulting
Electrical planning with consulting, clarifications and coordination; CAD plans for construction projects, functional solutions tailored to customer needs, and planning for new-build, conversions and renovations.
24-hour on-call service
24-hour service for electrical systems and installations; small installations, maintenance and upkeep, service orders, repairs, as well as restoration and adjustments of existing systems.
Telematics
Telecommunications solutions as a certified Swisscom IT partner; telephony, IP telephony, DSL, IT security, VPN connections, data cabling, fibre-optic installations and active components.
Alarm and security
Security systems with threat assessment, protection concept and measures; alarm systems, fire, intrusion, gas and water alerts, as well as video surveillance from planning through to execution.
Smart living
Networking of building services systems based on bus technology; control of lighting, shutters, heating, alarm systems and music for greater comfort, safety and energy efficiency.
Photovoltaic system
Photovoltaic systems, PV storage systems and optimization of self-consumption; consulting and implementation of solutions for renewable energy and sustainable infrastructure.
Trust & reputation

ranQ Trust Score of CAL Gebrüder Calendo AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

CAL Gebrüder Calendo AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
CAL Gebrüder Calendo AG 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.55.07%
CAL Gebrüder Calendo AG scores 83.3 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).83.322%
CAL Gebrüder Calendo AG scores 1.7 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 35.1.74%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

CAL Gebrüder Calendo AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, 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.

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Location

Bederstrasse 119
8002 Zurich

At a glance

Legal form
Corporation
UID
CHE-114.634.097
Founded
2008 · 18 years
Last commercial register change
November 10, 2023
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.85.03%
    • Full methodology

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