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Sizing a heater allows you to calculate the power needed to achieve the thermal comfort you want. This calculation depends on certain factors that have a direct influence on the final result. Thanks to this calculation, you will save money on the purchase of your radiators but also on your heating bill.

Dimensioning of a heating system

Dimensioning of a heating system

What is the dimensioning of a heating?

The dimensioning of a heating is the calculation that aims to determine the power heating and also the number of radiators needed to heat your home. In the case of a central heating, the sizing will determine the power of the boiler and the number of hydraulic radiators that you will need to install in your home. The sizing of your heating system depends on several criteria such as the volume of the surface to be heated, the geographical area where you live and the insulation of your home.

Why size a heating system?

Even if it seems like a trivial act, the sizing of your home is very important to reach thermal comfort desired without wasting energy. Indeed, if the power is underestimated, the radiators or the boiler will tend not to sufficiently heat your housing and you will have then push the thermostat to the maximum. Your energy consumption will be excessive. In the case of an overvalued power, you will have bought radiators (or a boiler) more powerful and therefore more expensive and your radiators will consume too much energy. Be aware that for a well insulated room with a ceiling height of 2.5 m, you will need a power between 70 and 100W per m². From 30 m², prefer to install two radiators rather than one more powerful.

Who is responsible for sizing a heating system?

The sizing of a heating system is a calculation that you can do yourself. There are many websites that explain what to do and how to do the math.

Be aware, however, that the design of a heating is not so simple because you will need some information such as the rate of heat loss of your home and the minimum outdoor temperature in your area. It is therefore strongly advised to go through a professional. It will perform a complete energy balance of your home and realize the dimensioning taking into account the area where you live, the insulation of your home, the volume and layout of the room and the desired temperature. It will also give you advice on the type of radiators or boiler to choose from and tips on the location of the radiators.

Video Instruction: Sizing a Heat Exchanger: Counter-Flow