SENIB is a free software that without charge can be used by both companies and private persons. It is used to find out optimal energy consumption in a property and keep track of its energy use, but it can also calculate pre-setting values for radiator valves amongst other things. By adjusting existing installations together with minor replacement of inexpensive parts, you can obtain reductions of energy consumption and SENIB will tell you how much. Payback for these steps is rarely more than 2 years. In the menu above, you can choose where you want to start to learn more about SENIB.