Thermostatic valves produce benefits in terms of energy saving, comfort and tax advantage. In terms of comfort, the thermostatic head precisely regulates the room temperature desired by the user. Energy saving: the thermostatic head reduces the flow of hot water produced by the heat generator when the set room temperature value is approached, until it is completely interrupted. Fiscal advantage: the IRSAP thermostatic head falls within the "Low thermal inertia" typology and allows access to the relative fiscal deductions.