How can I make my house more energy efficient and thereby save energy and costs?

There are various measures you can take to make a home more energy efficient. One possibility, for example, is to improve thermal insulation to reduce heat loss. Insulating materials such as mineral wool, hemp or cellulose can be used for this. It can also be worthwhile to replace the windows with an energy-efficient version. Another starting point is optimizing the heating system, for example by installing a modern condensing boiler or a heat pump. The use of renewable energies such as solar thermal energy or photovoltaics can also help reduce energy requirements. There are also various funding programs that can financially support the use of energy-efficient measures. Advice from an energy consultant or architect can help you find the right measures for your own house.