The thermal yield of electric heating products and the calculation of the heat requirement to ensure the correct heating of your rooms depend on 3 basic parameters:
1) The size of the room in square meters
2) The degree of thermal insulation of the room
3) The average outdoor temperature of the Geographical area of the house
Clearly there are also other factors that can influence the choice of the most appropriate product such as, for example, the exposure of the room to the north or south, its intended use (domestic or commercial) or subjective needs of ambient temperatures higher than the average.
However, this guide provides an indication for the calculation of the ideal average heat requirement to ensure a correct heating level with a responsible consumption of energy.
Assume as a matter of fact that the house we are talking about has a degree of normal thermal insulation (where for "normal" we mean a house built between the years 70 and 80 and then probably with an ENERGY CLASS between the G and the E ) and that the ceiling height is between 2.7 and 3.0 meters, not higher.
ITALIAN GEOGRAPHIC AREAS
We have identified 4 different geographical areas:
PURPLE: VERY COLD ZONES: areas where the average winter temperatures are between -15 °C and 0 °C
BLUE: COLD AREAS: areas where the average winter temperatures are between -5 °C and + 5 °C
YELLOW: MYTH ZONES: areas where the average winter temperatures are between 5 °C and 12 °C
GREEN: WARM ZONES: areas where the average winter temperatures are between 12 °C and 15 °C