Passion for heat transfer

At heat 11, we care passionately about the heat transfer. Around the industrial process heat you get a high performance package from one single source: Planning, engineering, manufacture, assembly, commissioning and after-sales service. Our thermal oil plants, thermal oil boilers (thermal oil heaters) and waste heat boilers solve each heating task.
Check it out for yourself. What can we do for you?

From thermo oil boilers to pumps - all about our products and services
In every industry: the right temperature at the right time in the right place
Why thermal oil? Learn more about the advantages of Thermal Oil Systems.
Plant Optimization
Production up, costs down - with efficiency solutions by heat 11.
All-inclusive: After-Sales and Retrofit-Service after commissioning.
Plant Engineering
From concept to operation - Turnkey solutions.

Featured projects

Kneader temperature control
Kneader temperature control
Heating-cooling plants, Plastics processing, Secondary loops, Special plants
Electrical oven heating
Electrical oven heating
Electric heaters, Food and drinks, Special plants
Biomass Processing Plant
Biomass Processing Plant
Fired heaters, Renewable energies, Secondary loops
Decontamination plant
Decontamination plant
Heating-cooling plants, Renewable energies, Special plants, Steam generators

Where we are

heat 11 GmbH & Co. KG
Otto-Brenner-Straße 203
33604 Bielefeld

Tel +49 (0) 521 989 110-0
Fax +49 (0) 521 989 110-60

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Why to choose heat 11

Our plants stand for low operating costs, best environmental standards and highest profitability.


heat 11 has the best specialists for a competent, binding advice and the effective solution for your task.

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More than 100 years of experience with the highest process standards ensure the highest possible safety in handling.

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To ensure a constant high product quality we only work with the best in engineering, manufacture and assembly.

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Extensive support from the approval up to the commissioning ensures an excellent cost/performance ratio.

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Prompt spare parts supply and availability of our service technicians – 24 hours a day / 7 days a week.


heat 11 worldwide

years experience


Time for gold: The 555th secondary loop
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