Classic thermostatic heads do not need any batteries. on the other hand, electronic thermostatic heads need batteries to close and open the circuit through an electric motor. These thick ones are recognizable by their size and because they have electronic components such as LEDs, displays, etc...
You can contact your dealer.
Estimating the heating requirements of a room or building is a complicated calculation that must take into account many specific factors and must necessarily be done by a qualified technician. However, there is a calculator on the Irsap website that can provide an indicative estimate of the watts needed to heat a room.
Radiators usually do not require any special cleaning. It is sufficient to dust them periodically with a slightly damp cloth, preferably using microfiber one or a duster. There are specific dusters on the market whose shape makes this operation much easier.
Most radiators are available in the full range of Irsap colours. However, some models may have restrictions. To find out which colour is available for your radiator, you can view the colours compatible with your radiator on our website at the product page. Alternatively, you can view the "physical" colour chart in our showrooms and see for yourself the rendering of each finish.
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