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BidSonar is an independent index of public-sector opportunities. We aggregate data from official sources and are not affiliated with any procurement body. Data is licensed under the Open Government Licence v3.0 and the EU TED reuse notice.

    ContractsHeating System Installation and Modernization
    Awarded contract

    Heating System Installation and Modernization

    Awarded
    €416.2k
    Published 6 Jul 2025

    The City of Karlsruhe is seeking suppliers for the installation and modernization of a heating system at the Technical Center of the Carpentry Department. The project includes the following key components: - Installation of a heating system using a 100 kW pellet boiler and a 20 kW wood chip boiler

    🇩🇪GermanyPublished 6 Jul 2025· 1 year agoviaTED
    Awarded
    €416.2k
    Published 6 Jul 2025

    Decision brief

    4 fields
    • Contract value
      €416,242
      Euros
    • Closing date
      Not published
      No closing date published
    • Sector
      Construction
      Browse related listings
    • Location
      🇩🇪Germany

    Suppliers

    1 supplier
    • SH
      SANIZENTRA HAUSTECHNIK GMBH
    Lead contractor

    Lifecycle

    Awarded

    Contract awarded. Originally published 1 year ago.

    6 July 2025
    Awarded — no open tender advertised

    Brief

    The City of Karlsruhe is seeking suppliers for the installation and modernization of a heating system at the Technical Center of the Carpentry Department. The project includes the following key components: - Installation of a heating system using a 100 kW pellet boiler and a 20 kW wood chip boiler. - Construction of a pellet storage room of approximately 12 m², including suction probes and sloped flooring. - Implementation of a buffer storage system with a capacity of about 4400 liters, connected to a pressure maintenance station. - Connection of four heating circuits, including underfloor heating, ventilation, fresh water stations, and their buffer storage, as well as a district heating network. - Integration of an electric heating boiler with the buffer storage to utilize excess photovoltaic (PV) energy. - Underfloor heating installation in the carpentry area covering approximately 346 m². - Construction of a piping network using stainless steel with insulation compliant with GEG requirements. - Installation of a separate stainless steel chimney for the heating system, which must be approved by building regulations. - The system will include building automation, which is not part of this description. This contract is valued at approximately €416,242.34 and is published on the TED platform. Suppliers interested in this opportunity can find more details at the provided link.

    Track record

    3 awards · 3 winners
    Open field

    No single supplier dominates the field.

    In construction, KARLSRUHE CITY OFFICE FOR BUILDING CONSTRUCTION AND PROPERTY MANAGEMENT has awarded 3 contracts to 3 suppliers.

    Who wins here
    1. Johann Joos Deep and Road Construction Company GmbH & Co. KG1× · 33%
    2. JOHANN JOOS TIEF UND STRAENBAUUNTERNEHMUNG GMBH CO KG1× · 33%
    3. SANIZENTRA HAUSTECHNIK GMBH1× · 33%

    Across construction, the most active winners are HOLCIM UK LIMITED, TARMAC TRADING LIMITED, LINDUM GROUP LIMITED — the field to beat, or your route in as a partner.

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    Take action
    View on sourceTED

    Award notice and full record on the publisher's site

    Publisher
    Publications Office of the European Union
    Licence
    EU 2011/833/EU + TED reuse notice
    Source
    ted.europa.eu
    Record ID
    440202-2025

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    Buyer
    KARLSRUHE CITY OFFICE FOR BUILDING CONSTRUCTION AND PROPERTY MANAGEMENT
    Sector
    Construction