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Voltwerk AG

Voltwerk AG

Heating & HVAC

About Voltwerk AG

Voltwerk AG in St. Gallen, at Sömmerlistrasse 9, brings together several disciplines of modern building technology under one roof. The company works as a heating contractor, electrician and as a supplier and installer of photovoltaic and solar systems – a broad profile spanning heat, electricity and renewable energy.

This results in a scope of services ranging from heating installations and classic electrical work to the supply and mounting of solar power systems. The combination of electrical engineering and photovoltaics is especially valuable when the generation, storage and use of solar power need to be coordinated.

Voltwerk thus appeals to homeowners and clients in St. Gallen and the surrounding area who want heating, electrical and solar planned and delivered from a single source – for example as part of an energy-focused upgrade. Details can be found at elektrisch.ch.

Opening hours

Opening hours
Monday07:45 – 12:00, 13:15 – 17:30
Tuesday07:45 – 12:00, 13:15 – 17:30
Wednesday07:45 – 12:00, 13:15 – 17:30
Thursday07:45 – 12:00, 13:15 – 17:30
Friday07:45 – 12:00, 13:15 – 17:00
SaturdayClosed
SundayClosed

Address & contact

Sömmerlistrasse 9
9000 St. Gallen

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Key facts

Voltwerk AG (Heating & HVAC) is located at Sömmerlistrasse 9, 9000 St. Gallen. Opening hours: Mon–Thu 07:45–12:00 and 13:15–17:30, Fri 07:45–12:00 and 13:15–17:00, Sat–Sun closed.

Address
Sömmerlistrasse 9, 9000 St. Gallen
Opening hours
Mon–Thu 07:45–12:00 and 13:15–17:30, Fri 07:45–12:00 and 13:15–17:00, Sat–Sun closed
Phone
+41 71 277 11 10
Category
Heating & HVAC
1 more fact
Website
elektrisch.ch

Source: CityHero directory · data as of August 2026.

Frequently asked questions

What is the address of Voltwerk AG?

The address is Sömmerlistrasse 9, 9000 St. Gallen. CityHero lists 37 heating companies in St. Gallen in total.

When is Voltwerk AG open?

Voltwerk AG is open as follows: Mon–Thu 07:45–12:00 and 13:15–17:30, Fri 07:45–12:00 and 13:15–17:00, Sat–Sun closed. It is open 5 days a week and closed on Saturday and Sunday.

Is Voltwerk AG open on Sundays?

No, Voltwerk AG is closed on Sundays. It is also closed on Saturday.

How late is Voltwerk AG open?

Voltwerk AG stays open latest Monday to Thursday, until 17:30. The earliest opening is 07:45 (Monday to Friday).

How do I get a quote from Voltwerk AG?

By phone on 071 277 11 10. Website: elektrisch.ch. You can also send Voltwerk AG a free, no-obligation request via CityHero.

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