Logo Oventrop GmbH & Co. KG

We are the partner for
efficient heating, cooling and clean potable water.

With the modular systems, all HVAC experts can work easily and flexibly – due to the possibility of adapting the pioneering solutions to their requirements. Our close cooperation with craftsmen and our extensive experience make us the competent leader in hydronic systems.

As a family business from the Sauerland region, we accompany all our partners over years - reliably and personally – from planning to installation, over commissioning to maintenance. With our digital services we create an added value throughout the entire process.

Our employees produce long-lasting, high quality products which can be globally connected to flexible systems – easy to install, energy-efficient and always reliable.

Wir regeln das. Seit 1851.


New year, new challenges?
Our brand relaunch 2021


What sets us apart:

• The largest modular combinable product portfolio on the market: With diverse product components in the areas of indoor climate, hydraulics, potable water, stations and smart home, we always find a suitable connection.

• Industry best in design: No other company in the  heating fittings industry has received more awards than we have.

• Made in Germany: We manufacture the raw parts in our own foundry and our own press shop. After further processing of the individual parts on numerically controlled automatic lathes, automatic assembly machines join them together to form the final product - all at our locations in Olsberg and Brilon.

• Pioneer: With innovative and groundbreaking oil filters, Oventrop shaped the German and European sanitary, heating and air-conditioning market from 1957-1973 like hardly any other brand, thus paving the way for oil heating.

• Certified quality: Oventrop was one of the first companies to be certified according to DIN EN ISO 9001, which defines the requirements for effective quality management in a company.

Your career

Working at Oventrop: Click here to find our job offers and apprenticeship opportunities.

Job & apprenticeship offers

Our subsidiaries

We distribute our modular solutions worldwide.

International presence

Our history

1851 Foundation

Arnold Oventrop (1820-1871) founds the Arnold Oventrop & Co. Messing- und Broncewarenfabrik in Altena.
Materials containing copper are the common denominator for the manufacturing programme - the factory produces brassware, such as fittings for furniture, doors and windows.

1871 Change of owners

A new generation: The sons Friedrich Wilhelm (1847-1935) and Adolf Oventrop (1851-1912) take over the company.

1886–1904 Expansion

The town of Altena is now highly industrialised. Labour becomes scarce and Oventrop relocates production to various locations in the Sauerland -
amongst others to Iserlohn and Bigge.

1907 Iserlohn


Grüne (Iserlohn)

1920 Bigge


Knickhütte in Bigge (Olsberg)

1922 Generation change

The son of Friedrich Wilhelm Oventrop, Paul Oventrop (1886-1974), takes over the factory in Bigge. The other factories are closed down in the course of time.


Oventrop at the Bigge site, 1925

1952 New shareholder

The Fähnrich and Rump families become shareholders in the company.


Werner Fähnrich (1909-1993) becomes Managing Partner.

1973 Oil crisis

The first oil crisis means a deep cut after the so-called "economic miracle" years.

1975 Municipal restructuring

As part of the municipal restructuring, Bigge becomes a district of the town of Olsberg. The company headquarters thus become Olsberg.

1980 Brilon

A production plant is opened in Brilon. Thermostatic valves and other heating fittings increasingly determine the product range.


Oventrop Werk Brilon, 1981


Georg Rump (born 1946) becomes Managing Partner.

1990 German reunification

The reunification of Germany and the opening of the borders in the East enable the company to grow strongly.


Jochen Fähnrich (born 1952) becomes Managing Partner.

2015 Brilon

Oventrop opens its largest factory building to date, equipped with state-of-the-art technology, on the factory premises in Brilon: components from the upstream production stages are finally assembled here on a floor space of more than 12,000 m².


Oventrop factory Brilon, 2016


Georg Rump is no longer Managing Director. Johannes Rump (born 1982) becomes Managing Partner.


The company has about 1,000 employees in its two plants in Olsberg and Brilon together, including about 70 trainees. Oventrop has more than 1,200 employees worldwide. Oventrop is one of the leading European manufacturers of valves, controllers and systems for building services.

The company offers a comprehensive range of about 7,000 products for heating, cooling and potable water as well as for industry, which are sold in about 80 countries all over the world. Exports are handled by eight sales subsidiaries and numerous representatives abroad.


Oventrop Verwaltung in Olsberg