Necessary power

85 m² x 2.5 m x 50 W/m³ = 10625 W = 10.625 kW
The power depends on the size of the room that needs to be heaten, on the quality of insulation and on the climatic area where the habitation is located :

- For a non isolated house located in a cold climatic area, you need about 70W/m³
- For a reasonably isolated house located in an average climatic area, you need about 50W/m³
- For a very good isolated house located in a hot climatic area, you need about 30W/m³

Example for a 85 m² habitation, with a 2.5 m ceiling high reasonably isolated and located in an average climatic area :