Aitokiuas Heat Storing Wood Burning Sauna/Banya Heater

Aitokiuas Sauna Stove - The Traditional Heat Storing Stove 

Aitokiuas is the original, traditional heat storing sauna heater from Finnish sauna manufacturer Narvi. Aitokiuas - AK stands for Aito Kiuas, which is Finnish for ‘Genuine Stove’. The sauna heater bears this name, because these traditional heat storing sauna stoves are based on the original sauna heaters used throughout the last century in Finland. Naturally the design has come a long way, being perfected by decades of Finnish ingenuity.

Unlike the other constantly burning heaters, these legendary heat storing stoves require only a single heating to provide excellent sauna until the following morning. The huge stone capacity delivers exactly the right kind of high oxygen heat for the truest löyly which is easily regulated, even by a sauna novice.

The matte black painted Aitokiuas is the perfect choice for a durable heater, ensuring rust resistance and making is a pleasure to clean. This heater comes with extremely durable, fast-heating stones that extend their usage life and decrease the required heating time. The AK stoves are the top class heaters for the true sauna connoisseur. A fact that has lead the Finnish president, Sauli Niinistö, to choose this heater for his personal sauna. Needless to say, their constant heat supply is an excellent bonus when fitting sauna around his busy schedule.

The heat storing heater works by combining the high specific heat capacity of the large volume of olivine or ceramic stones with an insulated casing. In line with our Endurance ethos, the heater is protected with enamelled rustproof steel, the stone compartment is lined with fireproof bricks and the firebox made from cast elements and fireproof mass. Furthermore, the inner lid, fire-grate and hatch are made from high quality cast iron. The AK-47 and 57 heaters are also available as tunnel model heaters, which is truly the ideal option for the user who insists on a tranquil sauna experience. There is a drop down for the AK-47 ST Tunnel section, which can be added to your basket separately (please note heater to be purchased in addition to the tunnel section.

The heaters require durable ceramic stones sauna stones due the high heats within the heaters. Both the AK57 and AK57 are available with heater tunnels that allow the heater to be fueled from the outside of the sauna room through the wall. These can be purchased separately here. The AK57 is also available with a extension piece that makes the heater taller (AK57K modification), which is particularly useful where the sauna or banya has raised or mezzanine benching. The AK57K also considerably increases the heaters stone capacity for a further improved löyly. The AK57K extension piece can be purchased here along with the additional ceramic stones required.

Product Specification

* This is so the sauna bench remains high enough from the surface of the sauna heater. 

** Safety distances are to combustible materials.

About Narvi Oy

You can browse our wider Narvi collection here. 

Product Disclaimer

All Aito heat storing sauna heaters are CE tested and bear the Finnish Key Flag Symbol. This is awarded to heat storing sauna heaters that are made and designed in Finland, where over 95% or more of the production must be within Finland itself. There are many brands that claim to be made in Finland but are actually made in the Far East or Russia and merely assembled or labeled in Finland. Watch out for these symbols as a mark of an authentic, Finnish-made, safe, quality product:

As part of Finnmark Sauna's Endurance Ethos, we only deal in products that are market leaders in quality. We commit ourselves to search exhaustively for the highest quality authentic Finnish sauna products.

Please note, we recommend that sauna heaters should be installed by a suitably qualified electrician/builder/plumber/fitter. Finnmark Limited accepts no liability for loss or injury caused by the incorrect installation of your sauna heater. Please Contact Us if you require information on our recommended fitters.

Product Specification

* This is so the sauna bench remains high enough from the surface of the sauna heater. 

** Safety distances are to combustible materials.