Older buildings account for the greatest share of energy used in buildings. A great number of these buildings will require overall or partial refurbishment or modernisation in the near future. Such occasions are perfect opportunities to reduce the energy consumption of these buildings quite significantly by applying appropriate methods. Using components developed new Passive House Standard constructions also allows for significant energy savings in older buildings.

Annual heating demand for an unrefurbished old building, a “low-energy” refurbishment, and a refurbishment using Passive House components.

This section contains information on the following topics:

Passive House refurbishment - introduction

EnerPHit – the Passive House certificate for old buildings

Thermal envelope

Passive House refurbishment - ventilation

Quality Assurance: Nuremberg case study

Prospects for the modernisation of existing buildings using highly efficient components