District Centre Heating Plant Renovation with Heat Pumps

Summary

The tender concerns renovation of the heating plant at a district centre in Fürstenfeldbruck after the existing gas heating system was destroyed. The works include dismantling the existing heating system and gas equipment and installing three 20 kW air-to-water heat pumps, two approximately 950-litre buffer tanks, pressure-maintenance and deaeration equipment, and heating-water treatment. The scope also includes new pipework and insulation, replacement of the mixing valves and pumps serving the regulated heating circuits, replacement of radiator thermostat valves, and hydraulic balancing in a building with 105 radiators. Electrical and control works, commissioning, documentation, sanitary works, and trenching and pipework for the external heat-pump connections are also required. The works are planned for 28 September 2026 to 18 December 2026. Tenders must be submitted electronically in German. The contract is not divided into lots, alternative tenders are not permitted, but multiple main tenders are permitted. The award criterion is the lowest price. The notice and the bill of quantities contain conflicting tender deadlines: 22 September 2026 at 11:00 in the notice and 15 September 2026 at 11:00 in the bill of quantities. The deadline must be confirmed with the contracting authority before submission.