Power-to-Heat & Control power
Process heater & Control panels
Process heater & Control panels
Standard products


Please note that our company OhmEx will have a new address and new telephone contact details from July 01, 2024. The new address is:

OhmEx Industrielle Elektrowärme GmbH

Lützeltaler Str. 1

D – 63868 Großwallstadt

OhmEx Portfolio

OhmEx is a universally acclaimed designer and manufacturer of electrical process heaters and control systems. Use our experience in the design of electric heaters for use in safe and potentially explosive areas. We offer you a complete portfolio of customer-specific electric process heaters as well as an extensive standard product portfolio such as immersion heaters, room heaters and thermostats with many national and international approvals conforming to ATEX, IECEx, CSA, CU TR, CCOE, KGS, CNEx.

Power-to-Heat & Control Power


Power-to-heat – conversion of excess current to heat.

Process heater & Control panels

Prozesserhitzer & Schaltanlagen

OhmEx offers you customized technical solutions for your application requirements in safe and potentially explosive areas.

Standard products

OhmEx offers you intelligent solutions for a wide range of requirements in safe and potentially explosive areas.

News / Innovation

Hazardous Area Portable Fan Heater ‘The Bulldog’ Type MFH

‘The Bulldog’ Portable Fan Heater is the world’s first truly portable hazardous area fan assisted heater. The Bulldog combines efficient design with simple functionality to provide a portable heating solution for use in hazardous environments where the atmosphere is classified as Zone 1 or 2 (IIA, IIB and H2). Certified to the new BS EN ISO 80079-36 and BS EN ISO 80079-37 standards for constructional safety. The Bulldog comes ready to ‘plug and play’ with the option of fitting a plug, or hard wiring to an isolator unit.
learn more

Art of construction for heating elements

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Contact us

Do you have any questions? Want to talk about a project? Wish to get an initial offer? You are welcome to contact our sales at any time!

+49 (0) 6022 / 7069070

To contact form:

to contact form

OhmEx - Your partner for industrial heaters

Contact now

OhmEx Industrielle Elektrowärme GmbH
Lützeltalerstraße 1
DE – 63868 Großwallstadt
Phone: +49 (0) 60 22 / 70 69 070

E-Mail: info@ohmex.de

How to find us

Quality & Certificates

The OhmEx company regularly gets itself certified externally - so we keep our quality consistently high!
Currently we are certified according to
IQNet ISO 9001: 2015
and ISO 9001: 2015.
Download the certificate ISO 9001:2015 here:
ISO 9001-2015 Certificate
Download the certificate IQNet ISO 9001:2015 here:
IQNet ISO 9001-2015 Certificate

Your direct contact

You are also welcome to contact our sales department directly:

Matthias Volz
Tel.: +49 (0) 60 22 / 70 69 072