Conversion of single-pipe to two-pipe heating systems as general contractor 2026 Tender
Original: Umbau Einrohr- auf Zweirohrheizungen als Generalunternehmer
Münchner Wohnen GmbH
In context
This is a contract notice published by a government body covering construction and works. Delivery covers Germany (Europe). It is classified under Energy Efficiency, Heating and Cooling and Engineering and Infrastructure against the sustainability taxonomy rather than matched on keywords.
Retrofit of a 338-unit residential heating system from single-pipe to two-pipe distribution, including design, demolition, installation, testing, and commissioning. Bidders must be general contractors capable of large-scale HVAC system conversion and building-services engineering.
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About this tender
Münchner Wohnen GmbH is procuring a general contractor (GU-Vergabe) for the conversion of the heating distribution in an existing residential complex at Wintersteinstraße / Fortnerstraße in Munich (execution place 80331 München). The complex has 338 apartments across 25 staircases. The existing single-pipe heating system will be replaced with a two-pipe system. The scope covers all services needed for this conversion: planning, dismantling, installation, testing and commissioning, including the required adjustments and new routing of pipework and heating distribution lines. The procedure is an open tender under VOB/A-EU. The tender is not divided into lots, and side offers and multiple main offers are not permitted. The notice does not state the contract duration or the construction period. The award is expected around 3 January 2027.
Key requirements
- ✓Conversion of single-pipe heating system to two-pipe system for 338 apartments across 25 stairwells
- ✓Full scope: planning, demolition, installation, testing, commissioning of heating distribution networks
- ✓Adaptation and new construction of pipe routing and heating distribution infrastructure
Procurement contact
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About this sector
Energy efficiency funding covers building retrofits, industrial process upgrades, heat recovery, efficient equipment and demand reduction. It arrives as grants for audits and capital works, as support schemes run by agencies and utilities or as public tenders for retrofit and energy services. Applicants usually need a baseline of current energy use and a measured saving.
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