But how, for example, is the Pope's seat, the Palazzo Apostolico, heated? Anyone who suspects a correspondingly huge system is wrong.

Alongside the Vatican's technicians, Hoval experts adapted the system's performance to the actual energy demand. The three previous boilers, each with an output of 5.5 megawatts, are now replaced by three Hoval high-performance industrial boilers with 3 megawatts each. As a result, the output has been reduced by around 45 percent, and so the Vatican is now saving energy – without the Pope having to freeze in his apartments in the Palazzo Apostolico and the people in the surrounding rooms.

As a qualified and reliable partner, Hoval supplies a whole range of church institutions in Italy and has therefore also been involved in the renovation of the heating plant and the district heating network from 1920 in the Vatican.

Larger buildings such as hotels, schools and hospitals, as well as warehouses and production halls, require a lot of heat. The heat demand of local and district heating networks can also be high. To this end, Hoval offers a variety of technologies for oil, gas and biomass in finely graded performance classes so that each plant can be designed in exactly the right way. A giant – also in terms of economy – is the Titan-3 3-train boiler. In its highest power class, it has an output of up to 20 megawatts.

Keyword cost-effectiveness: Over the service life of a high-performance boiler of realistically calculated twenty years, the operating costs exceed the initial investment by many times. With its high-performance boilers, Hoval is proving that operating costs can be massively reduced: depending on the system, more than six times the original procurement costs can be saved.