How to choose a cast iron stove for a bath?

The bathhouse is a useful and rather specific structure. That is why its arrangement requires high-quality and functional devices that will ensure proper heating of the room. Today manufacturers offer a large selection of sauna stoves. The cast iron stove is a prominent representative of the products of this segment..


A similar sauna heating device installed in the steam room will help to achieve the required air temperature and soft steam. Among the features of cast iron structures, one can single out their safety for humans, in comparison, for example, with a conventional iron stove, which, when heated, forms infrared radiation that is harmful to human eyes..

In addition, such a design is able to warm up the air much faster, in contrast to brick heating devices. This is explained by the high thermal conductivity, which is characteristic of cast iron..

Most often, it is rectangular furnaces that are made, but you can find oval and round units.

Features of the configuration of the cast iron structure require the presence of some additional components:

  • water heater;
  • chimney;
  • casing;
  • remote tank.

Unlike monolithic devices, collapsible models have locking grooves, due to which the thermal structure can be easily assembled. Additional sealing of the components takes place with the help of a special sealant. Due to its design features, the cast-iron sauna stove can be easily transported to the destination.

There are devices that are manufactured taking into account that the components of the unit will be located in different rooms. This applies to a stove with an extended firebox. Such a model allows placing the body itself in the steam room, and the firebox, for example, in the dressing room.

When choosing such a variant of the stove, it becomes possible to service the stove and warm up the steam room from one room, and to relax and enjoy the fascinating view of the fire from another room (when installing a heat-resistant screen in the unit).

The most acceptable fuel material for kindling is firewood or peat briquettes.. Based on the characteristics of cast iron, it is not recommended to heat the furnace with coal, since the result of heating the structure to too high values ​​may be the formation of cracks on the surface of the device. A wood-fired sauna creates a more comfortable atmosphere for a person.

To provide the structure with a more attractive appearance and contribute to an increase in the heat transfer coefficient of the furnace, it can be additionally lined with stone. This technique will also increase the level of protection of the structure from the influence of external factors, in particular, from moisture ingress on the body of the device..

A cast iron stove offers several options for arranging a chimney:

  • on the back of the structure;
  • directly on the unit;
  • roof outlet.

The heating device has positive features, among which the following qualities can be distinguished:

  • Small size and weight. Stoves made of stone or brick are superior to a cast iron stove in these parameters. However, the compactness of structures made of this metal does not affect functionality in any way, due to which it can be used to heat large steam rooms..
  • The unit has a high efficiency, this positive property is due to the ability of the raw material itself to conduct heat well, in contrast to steel furnaces. Having heated up to the maximum allowable temperature, the cast iron begins to cool down, giving off pleasant warmth to the room, which ensures comfort in the steam room.

  • Mobility devices – to install a cast iron structure in a bath, there is no need to equip a foundation for it. And the weight and size of the device make it possible to transfer the furnace to another room in cases where circumstances require it, for example, during repairs.
  • Cast iron construction is the safest heating device. This is due to the tightness of the combustion chamber, which excludes the ingress of sparks on any surface in the room or on a person. Brick units are often the cause of fire hazardous situations in the bath.

  • Low cost products – bath owners note that the total cost of a cast-iron stove and installation work turns out to be less than the cost of building a brick structure.
  • Environmental safety of raw materials – the use of the bath, first of all, should be beneficial to health. Therefore, the operated devices and objects must meet the environmental safety standards to the same extent. Cast iron poses no threat to humans and is a reliable source of heat supply to such premises..

And for heating it is better to use natural raw materials – wood, which will provide an additional pleasant aroma in the bath.

The heating cast-iron structure still has a certain drawback – the material is prone to corrosion. But as evidenced by the reviews of consumers who operate such structures in their baths, they did not observe such a negative trend after installing the unit. This is due to the fact that manufacturers during the manufacture of furnaces process the body of the product with a special protective compound..


Cast iron heating structures for a bath are periodic or continuous action. The main differences between the devices are in the raw materials used for kindling the unit. In the latter version, liquid fuel or gas is used, the supply of which is carried out without interruption, throughout the entire period of use of the steam room. Firewood is used to periodically heat the device in the form of a combustible material..

For quick heating of the bath, there are types of cast iron stoves with an open stove, as well as designs with a closed stove. The last option should be installed in the steam room for a long stay and bringing bath procedures.

Stoves with a closed heater perform their functions according to the following scheme:

  • The stones are located between two sheets of material, which promotes rapid heating and slow cooling. This leads to a gradual release of heat into the room. Uniform heat transfer exerts a gentle load on the human vascular system, due to which there are no restrictions on visiting the steam room for health reasons. This applies to people with heart and respiratory diseases..
  • Design features remove flue gases through the heater, which additionally heats the air.
  • The maximum heating of the stone is about 600 degrees. Therefore, the temperature in the steam room remains much longer, which means that you can save on raw materials for heating the stove and extend the time spent in the bath..

The open type of the heater assumes heating stones not only from below, but also on the sides.. However, to evenly heat them, you should still observe the measure in the number of stones – if they protrude outside the structure, it will not work to warm them up to the desired temperature.

Such devices can have a special grid over the entire area of ​​the case for storing the stone..

Based on the location of the device’s firebox, cast iron stoves are of two types: designs with a conventional or extended firebox. The latter option is arranged in a wall opening with an adjacent room with a steam room. This configuration allows the unit to be serviced externally or internally. In most cases, this arrangement improves the usability of the stove..

Cast iron stoves can be classified from the place where the location of the water tank is provided:

  • models with a container built into the top;
  • units with a hinged tank;
  • structures with a container on a pipe;
  • furnaces with a remote tank.

From a practical point of view, it is more correct to dwell on the hinged version, since the container needs maintenance, and, for example, the built-in containers cannot be moved, therefore it is rather difficult to wash them. The remote version is optimal for saunas, where the steam room and the washing room are separated.

There are models that are positioned as structures that require additional cladding. You can cover the device with a brick or talcochlorite – its thermal conductivity is five times greater.

There are models that are already dressed in natural stone at the factory. However, furnaces with already finished lining are quite expensive products, since most often the cost of finishing will be similar to the price of the structure itself..


Modern cast iron stoves stand out for their versatility, due to which they are in demand for operation not only in baths, but also in Finnish saunas.

Heating devices for baths Gefest, Magnum, Vesuvius, Kudesnitsa are considered the leaders in the line of these products..

  • Range of ovens Vesuvius represented by units “Vertical”, “Legend”, “Russian steam”, “Lava”.

  • Constructions Gefest PB-03 are models with a small size, in the course of the production of products, heat-resistant cast iron is used. The device is capable of heating rooms with an area of ​​about 25 m2. Firewood or wood briquettes are the raw materials for heating the oven. The positive design features include the elongated configuration of the furnace and the presence of a flame diffuser, which provides the heat exchanger with greater power. In the basic configuration, the device is supplied with a decorative mesh for a stone, a sealant for sealing joints during installation, and a box for ash. In addition, the stove door is decorated with decorative molding..

  • Plant “PetrozavodstkMash-TNP” in Karelia produces quality products for heating baths.
  • Ovens “ATB” are in great demand on the market due to the high quality of the raw materials and structures used in general. The unit is designed for operation in a room with an area of ​​20 m3. The standard equipment of the product includes a water tank and a chimney.

  • Sauna stoves “Magnum” popular for facing with massive stone. This configuration allows the device to perfectly retain heat..
  • Vesuvius is an all-welded structure with the possibility of installation in the wall for service from a room adjacent to the steam room.
  • Cast iron stove “Sudarushka” it is distinguished by its reliable design. The model is supplied for sale together with a water tank. The device is recommended for heating rooms with an area of ​​15 m3. The unit has a closed heater and a glass door.


Today, you can purchase a cast-iron unit for heating baths not only based on the assortment on the market, but also by ordering a model that meets individual needs..

However, it is worth navigating the selection of a particular variety based on the following fundamental factors:

  • Aesthetic appeal models. This characteristic is determined by the manufacturer at the design stage. To increase its appeal, most modern devices have glass doors that allow you to watch the fire..
  • Fuel type used Is a very important detail. Since not only firewood is now used as raw materials, but also electricity and gas. The latter options are easy to maintain and operate..
  • Also important is cast iron grade. Material markings indicate thickness and strength. These characteristics greatly affect the durability of the structure..

  • Efficiency device, which directly depends on the volume of the furnace. It increases with its size.
  • The configuration of the firebox itself matters because it will determine how the device should be positioned.
  • Availability of a water tank and its device. This product provides the functionality of the stove, and also makes it possible to have hot water in the bath. The location of the tank in each model may be different.
  • Heater type – in this case, one should proceed only from personal preferences. However, the main criterion when choosing is still the safety of the structure, so that there is no risk of gases or smoke entering the room. Closed heaters provide a higher temperature, but at the same time, they allow you to control the steam level using the shutters. In the case of an open version of the arrangement, a metal cover will be needed for regulation..

The selection of stones for the stove is an important process for the correct functioning of the stove in the sauna.. Most of the cast iron structures already have a set of stones in the kit, but there are devices where they must be purchased independently. In order not to be mistaken with the calculations, it should be borne in mind that 100 kg of stones are needed for a steam room area of ​​10 m2.

These attributes require periodic replacement, since their average service life is about 3 years..

Stones are selected based on the following criteria:

  • shape – rounded products keep heat better;
  • size – the cobblestones must be of different sizes, the largest must be laid down;
  • stones that have even minimal defects are not recommended to be purchased;
  • the natural origin of the elements is of great importance.

Beautiful examples

The design of cast iron stoves is of paramount importance today. Aesthetics combined with health benefits have a beneficial effect on the popularity of bath procedures. Constructions that allow you to contemplate the play of tongues of flame in the stove will give a lot of positive emotions from the pastime, which is why cast-iron stoves with a glass door located in the steam room are so popular.

And the models decorated with decorative forging will become an attribute of sophistication and good taste. Such designs give the impression of ancient products with a long history..

For how a cast iron stove works, see the next video..

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