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Rettig Germany

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German manufacturer of heat-transfer products (radiators, underfloor heating, chimney systems) operating the Purmo and Vogel & Noot brands, part of Finland's Purmo Group and Rettig Group.

Last updated September 29, 2026

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Overview

Rettig Germany is a German manufacturer of heat-transfer products headquartered in Goslar-Vienenburg, with additional production sites in Meiningen (Thuringia) and Lilienthal (Lower Saxony). The company traces its roots to the merger of Purmo AG (active in Germany from 1974) and DiaNorm Wärme GmbH (founded in Vienenburg in 1960, with radiator production starting in 1973). That merger created Purmo DiaNorm Wärme AG in 2000. On 23 September 2009 the company was renamed Rettig Germany GmbH as part of a change of legal form, and retroactively from 1 January 2009 Vogel & Noot Wärmetechnik GmbH (Lilienthal) was merged into it. In 2021 the firm was renamed PG Germany GmbH. The company operates two principal brands in Germany: Purmo and Vogel & Noot. Under the Purmo brand it sells radiators, underfloor heating and heating connection systems; under Vogel & Noot it offers radiators, underfloor heating and chimney systems. The Purmo brand name derives from the municipality of Purmo in Ostrobothnia, western Finland, where the company began radiator production in the 1950s. In 2012 Rettig ICC (today Purmo Group) acquired the German pipe manufacturer Hewing GmbH from the Finnish Uponor group; since then Hewing GmbH has been a wholly owned subsidiary of Rettig Germany. Rettig Germany GmbH is a wholly owned subsidiary of Purmo Group Ltd., based in Helsinki, Finland. Purmo Group is in turn a subsidiary of Rettig Group, also headquartered in Helsinki. The Rettig Group functions as an investment company for the owning family and, alongside heat-transfer production (Purmo Group), is mainly active in limestone extraction (Nordkalk). The German entity's official brand website is purmo.com/de-de, which presents sustainable heating and cooling solutions, including radiators, fan convectors, surface heating systems and related services for new builds and renovation. The company positions itself around four brand pillars — improved efficiency, better integration, smarter working and reduced footprint — and a sustainability strategy aligned with the UN Sustainable Development Goals and the Paris Climate Agreement.

History

The history of Rettig Germany is closely tied to the development of radiator manufacturing in Germany and Finland. The Purmo brand name comes from the municipality of Purmo in Ostrobothnia, western Finland, where the company began producing radiators in the 1950s. In Germany, Purmo AG became active from 1974. Separately, DiaNorm Wärme GmbH was founded in Vienenburg in 1960 as a plant of Raussendorf Maschinen- und Gerätebau GmbH, and radiator production there started in 1973. In 2000, Purmo AG (Hanover) and DiaNorm Wärme GmbH (Vienenburg) merged to form Purmo DiaNorm Wärme AG, headquartered in Vienenburg. On 23 September 2009, the company was renamed Rettig Germany GmbH as part of a change of legal form (formwechselnde Umwandlung). Retroactively from 1 January 2009, Vogel & Noot Wärmetechnik GmbH (Lilienthal) was merged into Purmo DiaNorm Wärme AG. In 2012, Rettig ICC (today Purmo Group) acquired the German pipe manufacturer Hewing GmbH from the Finnish Uponor group. Since then, Hewing GmbH has been a wholly owned subsidiary of Rettig Germany. From 2013 to 2019 the company maintained a research and development center in Crimmitschau, Saxony. In 2021, the firm was renamed PG Germany GmbH. Rettig Germany GmbH is a wholly owned subsidiary of Purmo Group Ltd., based in Helsinki, Finland. Purmo Group is in turn a subsidiary of Rettig Group, also headquartered in Helsinki. The Rettig Group acts as an investment company for the owning family and, alongside heat-transfer production (Purmo Group), is mainly active in limestone extraction (Nordkalk). The German company produces at Goslar-Vienenburg, Meiningen (Thuringia) and Lilienthal (Lower Saxony), and leads the Purmo and Vogel & Noot brands in Germany.

  • 2021

    The firm is renamed PG Germany GmbH.

  • 2013

    Company maintains a research and development center in Crimmitschau, Saxony (until 2019).

  • 2012

    Rettig ICC (today Purmo Group) acquires German pipe manufacturer Hewing GmbH from Uponor; Hewing becomes a wholly owned subsidiary of Rettig Germany.

  • 2009

    On 23 September, the company is renamed Rettig Germany GmbH; retroactively from 1 January, Vogel & Noot Wärmetechnik GmbH (Lilienthal) is merged into it.

  • 2000

    Purmo AG and DiaNorm Wärme GmbH merge to form Purmo DiaNorm Wärme AG, headquartered in Vienenburg.

  • 1974

    Purmo AG becomes active in Germany.

  • 1973

    Radiator production starts at DiaNorm in Vienenburg.

  • 1960

    DiaNorm Wärme GmbH founded in Vienenburg as a plant of Raussendorf Maschinen- und Gerätebau GmbH.

Products and positioning

Sustainable heating and cooling solutions with a focus on comfort, efficiency and reduced environmental footprint; serving installers, planners, architects, wholesalers and end customers.

  • Purmo radiators

    Radiators sold under the Purmo brand.

  • Purmo underfloor heating

    Underfloor heating systems under the Purmo brand.

  • Purmo heating connection systems

    Heating connection systems under the Purmo brand.

  • Vogel & Noot radiators

    Radiators sold under the Vogel & Noot brand.

  • Vogel & Noot underfloor heating

    Underfloor heating under the Vogel & Noot brand.

  • Vogel & Noot chimney systems

    Chimney systems under the Vogel & Noot brand.

Sources5 sources

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