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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringZurichKalt & Halbeisen Ingenieurbüro AG
Kalt & Halbeisen Ingenieurbüro AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Kalt & Halbeisen Ingenieurbüro AG is an engineering and planning firm that designs and implements energy and building services. Services include HVAC/GA (heating, cooling, ventilation, climate control, sanitary and sprinkler systems), energy management, building automation, energy concepts, BIM coordination, monitoring and optimization, and technical consulting for sectors such as hospitals, laboratories, industry, public buildings and residential/commercial properties.

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Products & services

Industry:Technical Consulting & Engineering
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Kalt & Halbeisen Ingenieurbüro AG

✓ Offered6
HVAC / Building Automation
Integrated energy and building services planning for heating, cooling, ventilation, air-conditioning, plumbing, sprinkler systems, energy and building automation.
Energy / Concepts
Holistic energy concepts, energy management, energy-flow analyses, simulations, cost-benefit comparisons, as well as CO2-optimized and resource-saving system solutions.
Coordination / BIM
Trade-spanning specialist coordination, digital coordination with BIM, clash detection, quality assurance and coordinated communication between project stakeholders.
Innovation / Digital Building
BIM-supported project planning and execution, Virtual Design and Construction, digital twins, smart-building concepts and digital construction processes.
Monitoring / Optimization
Energy monitoring, ongoing operational optimization, analysis of data and measures to improve system parameters, control strategies and heat recovery.
Advisory / Expertise
Client representation, client advisory, quality assurance in design and construction, project-based quality management and competition support.
Trust & reputation

ranQ Trust Score of Kalt & Halbeisen Ingenieurbüro AG: 4.3 out of 5.0

Trust Score4.3/ 5.0

Very high

x

Data basis 96% · As of October 2026

Kalt & Halbeisen Ingenieurbüro AG scores 65.7 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.70.024%
  • 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.45.610%
  • 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.78.08%
Kalt & Halbeisen Ingenieurbüro AG scores 95.0 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%
Kalt & Halbeisen Ingenieurbüro AG 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%
Kalt & Halbeisen Ingenieurbüro AG scores 71.4 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 35.71.44%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Kalt & Halbeisen Ingenieurbüro AG reaches a ranQ Trust Score of 4.3 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.6 out of 5 stars from 5 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
4.6
of 5

Aggregated from 5 reviews across all connected sources

Sources
GGoogle4.65
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Albulastrasse 47
8048 Zurich
Opening hours
Mon
08:00 - 17:00
Tue
08:00 - 17:00
Wed
08:00 - 17:00
Thu
08:00 - 17:00
Fri
08:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-105.854.955
Founded
1971 · 55 years
Last commercial register change
February 25, 2025
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.100.06%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.95.03%
    • Full methodology

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