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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,887 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringZurichHEFTI. HESS. MARTIGNONI. Zürich AG
HEFTI. HESS. MARTIGNONI. Zürich AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

HEFTI. HESS. MARTIGNONI. Zürich AG is part of the HHM group and provides electrical and building services engineering (HLKSE+), offering planning services for energy supply, building automation, photovoltaics, lighting design and fire protection.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered9
Integrated Building Services Engineering (HLKSE+)
Integrated building services engineering for building and infrastructure projects, including HVAC and electrical engineering, building automation, energy supply, fire protection planning and BIM-based coordination.
HVAC Engineering
Planning of heating, ventilation, air conditioning and sanitary systems for building and infrastructure projects, including coordination with other technical disciplines.
Electrical Engineering
Planning of electrical systems for buildings and infrastructure, including power and low-voltage systems, backup power, UPS and electrical distribution lines.
Building Automation
Planning of building automation for technical building systems, aligned with cost, consumption, project organisation and the desired level of digitalisation.
BIM and Overall Coordination
Overall project coordination using BIM methods, technical coordination across disciplines and alignment of organisation, project conditions and digitalisation level.
Power Supply Engineering
Planning of electrical power supply for buildings and facilities, including transformer stations, low-voltage main distribution, backup power, UPS, storage systems and condition assessments.
Infrastructure Engineering
Planning of infrastructure projects for railways, airports, data centres and power plants, including cable systems, operational and safety equipment and data-centre design.
Photovoltaics
Planning of photovoltaic systems in the context of buildings and infrastructure, as part of energy and supply solutions.
E-Mobility
Planning of charging and supply concepts for e-mobility in connection with building and infrastructure projects.
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4.1/5

HEFTI. HESS. MARTIGNONI. Zürich AG

Trust & reputation

ranQ Trust Score of HEFTI. HESS. MARTIGNONI. Zürich 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.

HEFTI. HESS. MARTIGNONI. Zürich 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%
HEFTI. HESS. MARTIGNONI. Zürich AG scores 95.8 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.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.96.07%
HEFTI. HESS. MARTIGNONI. Zürich 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%
HEFTI. HESS. MARTIGNONI. Zürich AG scores 94.3 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 35.94.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

HEFTI. HESS. MARTIGNONI. Zürich 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.

Knowledge

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Location

Josefstrasse 212
8005 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-105.331.108
Founded
1999 · 27 years
Last commercial register change
August 14, 2026
Employees
101 to 500
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.70.03%
    • Full methodology

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