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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,194 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringZurichHEFTI. HESS. MARTIGNONI. Zürich AG
HEFTI. HESS. MARTIGNONI. Zürich AG Logo
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HEFTI. HESS. MARTIGNONI. Zürich AG

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.

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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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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

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