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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,110 companies indexed · Last updated: today
DirectoryCrafts & TradesPlumbing & Building ServicesSt. GallenE3 HLK AG
E3 HLK AG Logo
Verified· 4 sources

E3 HLK AG

Summary

About the company

E3 HLK AG plans, installs and maintains heating, ventilation and cooling systems for building services engineering. The company also provides service, maintenance, operational optimisation, contracting and other energy engineering and plant construction services.

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Offering

Products & services

Industry:Plumbing & Building Services
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Heating
Heating systems, renewable energies, district heating, solar energy and heat pumps; installation of heating systems from the thermostat sensor to the industrial heating plant.
Ventilation
Ventilation systems for office and administration buildings, hotels and restaurants, fitness, cultural and leisure facilities as well as cleanroom installations; air treatment with heat recovery.
Cooling
Cooling systems and large-scale air-conditioning for server rooms, hospitals and commercial premises; installation of air-conditioning systems, IT infrastructures, process cooling and static cooling.
Service and Maintenance
Maintenance, upkeep, repairs, optimisation and periodic support of heating, ventilation and cooling systems; also minor installations, conversions and renovations.
Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 6 reviews across all connected sources

Sources
GGoogle56
★TrustpilotSoon
PProvenExpertSoon

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

Press

Media

December 10, 2018Media
BKW übernimmt Ostschweizer E3 HLK AG
tagesanzeiger.ch

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Location

Bildstrasse 5
9015 St. Gallen
Opening hours
Mon
08:00 - 12:00, 13:00 - 17:00
Tue
08:00 - 12:00, 13:00 - 17:00
Wed
08:00 - 12:00, 13:00 - 17:00
Thu
08:00 - 12:00, 13:00 - 17:00
Fri
08:00 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-115.427.589
Founded
2010 · 16 years
Last commercial register change
August 13, 2026
Employees
21 to 50

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