Heating power calculator

Calculation of the thermal power of the heating device.

An approximate calculation of the required power of devices for heating your room can be performed using the calculator below.

To do this, it is enough to enter in the corresponding columns of the calculator the dimensions of a particular room, the desired temperature in the room during heating, and the heat loss coefficient “HLC”, which takes into account the peculiarities of the thermal insulation of your room (the value of the “HLC” factor is selected from the table below).

The value of the heat loss coefficient “HLC” :

  • 0.6 – 0.9 – for a residential structure with very high thermal insulation, floor and roof, with a small area of windows.
  • 1.0 – 1.9 – for standard residential construction, double brickwork, few windows, roof with a standard roof deck. This room can be characterized as – a room with average thermal insulation.
  • 2.0 – 2.9– for a simplified residential structure, single brickwork, poorly insulated roof, large window area – Thermal insulation is below average.
  • 3.0 – 4.0 – for wood or metal construction. No thermal insulation.

Note. The exact value of the heat loss coefficient of a particular room is calculated by a heating engineer. If you do not know the exact value of this coefficient, be guided by the average value of the range of values of the coefficient “HLC” recommended for the room of your class of thermal insulation.





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The approximate required power for space heating: kW

Note. When further choosing the power of the heater for purchase, it should be taken into account that the calculated required heating power can be realized by one or several heat devices.