Materials

In the literature available, fireplaces made of fireclay and thermo-concrete are common. Magazines arrive from England, southern France, New Zealand, southern USA, Australia. The climates in the mentioned regions are mild and very humid, and the feeling of cold is almost like here. Fireplaces there should dry the air, face and hands of those present. A fireclay fireplace is ideal, which dominantly emits heat through radiation, although it has a modest degree of energy utilization.

Due to the harsh continental climate with dry air, a fireclay fireplace would severely compromise comfort here, so we almost exclusively make a fireplace with a steel hearth. , which heats predominantly with hot air (air-heating fireplace) and hot water, i.e. boiler fireplaces, which have an incomparably higher utilization of energy, with less drying of the air, and retain a dose of pleasant radiance, and one can sit just a meter away, even from a decently strong fire.

The dominant energy is obtained by warm air that it naturally obstructs the combustion chamber and flows out through the appropriate openings.

A boiler fireplace is a special problem and requires a special system design.

The basis of the separation is that the system should definitely be two-pipe, open (with an overflow tank in the attic), and with the upper distribution, which enables operation with a sudden power outage, when it works as a gravity one. This type of system smoothly amortizes the fire in the fireplace of thirty kilowatts of installed power, so that it does not have to be forcibly extinguished.