Significant financial savings are achieved by energy renovation of buildings, that is, by increase in energy efficiency. Energy audit implementation is the first step in the energy renovation of buildings.
The term „energy renovation“ implies, among other things, increasing the heat retention of the external building envelope, replacement of outer window and door frames and replacement or upgrading of the heating system. In the renovation, measures of use of renewable energy sources and adjustment of internal lighting as well as the implementation of a central management system for heating and cooling can also be included.
Energy-efficient houses provide a higher standard of living, while by renovation based on principles of energy efficiency savings on overhead expenses from 30 to 60 percent can be achieved. Eventually, reduction of energy consumption, especially of fossil fuels, leads to a reduction of carbon dioxide emissions, which means less environmental pollution, and thus a better protection of public health.
