Clivet, however, had the solution: a Sphera EVO 2.0 hybrid heat pump, which integrates heat pump and boiler. This heat pump is equipped with the €/Switch function, which calculates and activates the most efficient and convenient resource (heat pump and/or boiler) according to the contingent conditions, always favouring renewable resources, on the basis of the parameters entered by the user from the interface on the front of the unit: the cost per kWh of electrical energy, the cost per m3 of gas obtainable from the energy company's supply contract, and the prevailing type of terminals present in the building (radiant panels, fan coils, radiators).

In order to further reduce running costs and make the most of the existing photovoltaic panels, to cover the needs of the heat pump and other domestic users, not only during the day, but also in the evening hours, a 10 kWh Sinergy energy storage unit was installed. It stores the energy collected by the photovoltaic panels during the day and makes it available in the evening hours, which are when there is the greatest demand for electricity.

The entire system is controlled by the centralised Control4 NRG management and control system, which allows all connected elements to be managed in full synergy to maximise comfort and energy efficiency, and is managed remotely via smartphone by the owner through the Clivet Eye App.