Heat pumps are heat (but also cooling) generators that extract heat from a natural, inexhaustible and free primary source such as water, ground or air. The heat is then raised to the temperature required to be delivered to the room to be heated. To do this, heat pumps use a very small amount of electrical energy, about 20 per cent of the energy delivered to the room, known as 'useful' energy.

Geothermal heat pumps extract heat either from groundwater (hydrothermal) or from the ground (geothermal). In the former case, heat is extracted through an open-loop system (open loop), in the latter, closed-loop probes are used. Air source heat pumps (aerothermal), on the other hand, extract heat from the outside air. Geothermal heat pumps are not affected by external climatic conditions since the temperature of the water table or ground is almost constant throughout the year, and therefore maintain constant and very high efficiencies. Air source heat pumps, due to the fluctuation of the outside temperature during the year, are less advisable in cold climates (with temperatures close to zero) as they reduce their efficiency in such conditions.

Groundwater is the best heat source in cold climates in terms of seasonal system efficiency, as its temperature is almost constant throughout the year, between 13 and 16 °C on average. Hydrothermal heat pumps extract heat from groundwater and raise it to the required temperature to deliver it to the room to be heated. The groundwater is lifted by a hydraulic pump immersed in a withdrawal well to come into contact with a heat pump evaporator that extracts a few degrees, before being returned to the re-injection well (or surface) without any chemical modification or pollution. The few degrees extracted are then raised through a thermodynamic cycle, powered by a small amount of electricity, to the temperature required by the environment to be heated.

That is the question! Heat pumps are designed to operate at medium/low temperatures, i.e. between 35°C and 50°C, well below the temperatures reached by boilers. For this reason, common heat pumps are not compatible with conventional radiators, but are combined with underfloor or otherwise low-temperature systems. On the other hand, TEON heat pumps have been developed precisely with the aim of replacing boilers without the need to modify the traditional radiator system, while at the same time guaranteeing significant savings. In fact, TEON heat pumps reach 80°C and maintain superior efficiencies under all operating conditions.

The innovation introduced by TEON in the field of heat pumps has made it possible not only to extend their application into the 'territories' of operation exclusive to boilers (high temperatures and radiator systems), but also to far exceed their efficiency. Efficiency is measured by the Coefficient of Performance (COP), which represents the ratio between the useful thermal energy offered to the system and the electrical energy absorbed. On average, the thermal energy offered is 4-5 times greater than the electrical energy consumed. In economic terms, this means an energy bill cut of 50% compared to a gas boiler and 70% compared to an oil or LPG boiler.