Heat pumps in residential buildings: The key factors for efficiency and longevity

Heat pumps are the key technology for achieving climate neutrality in the existing building stock – yet they face particular challenges in listed buildings. Limited renovation options, high heating requirements and flow temperatures of 60 °C and above due to old radiators can significantly reduce a heat pump’s efficiency and service life. Careful planning, professional commissioning and systematic operational monitoring are therefore crucial. This presentation examines the relevant factors along the entire process chain – from the initial consultation through to planning and ongoing operational monitoring – and provides practical recommendations. The focus is on the selection and sizing of the heat pump based on realistic heating loads, its hydraulic integration into the existing heat distribution system, and its installation and commissioning in accordance with the design parameters. Another key focus is on operational monitoring: by specifically adjusting parameters such as the heating curve, flow temperature and operating times, the heat pump can be adapted to the building’s actual requirements – thereby increasing efficiency and service life. Practical examples demonstrate how these recommendations can be implemented in listed buildings.

Teaser image: Copyright dena / Sascha Linke