Table of Contents
On these pages of the Efficiency NOW initiative, we will discuss measures relating to building services systems that allow the energy demand for heating and hot water to be reduced. These are still the most predominant energy uses in buildings. In existing buildings, this often adds up to over 80 % of the total energy consumption (usually of fossil fuels such as gas and heating oil), and even in ordinary new builds1), this is still more than 50 %.
Space heating systems
- Using room air conditioners for heating
- Is a new heat generator needed?
Hot water systems
Other technical systems
- LED light
- Heat dissipation from electrical devices
See the overview of Structural measures for energy efficiency