With the Package Medium you get a number of extras in addition to everything from the basic package. For example, you get radiator foil, a timer and pipe insulation. The radiator foil helps to prevent heat loss, the timer ensures that your appliances are switched off automatically when you are not using them and the pipe insulation prevents heat loss through pipes.
Is it better to leave this to a professional?
It is better to leave this to a professional. A professional has the knowledge and experience to carry out the installation properly. This way you prevent mistakes being made and your energy costs rising further. The possible costs of the Medium package are €199. This is a relatively low price for the extras you get.
