Original's efficiency, Iivari's excellent steam properties
Gösta is designed for saunas of 15–40 m³ and combines Original's efficiency with Iivari's excellent steam properties. The total efficiency of the stove is over 73%.
Balanced stone quantity and heating power
The Juup Gösta's stone chamber can hold approximately 45–55 kg of stones, depending on their size and material. The amount of stones is precisely dimensioned to match the stove's heating power, so the stove can keep the stones constantly hot – even if steam is thrown more often.
Versatile and long-lasting steam
The stone chamber of Gösta is located directly above the firebox in a stone pot. This ensures rapid heating of the stones and that every drop of water for the steam evaporates efficiently. Some of the water flows down to the bottom of the pot and gradually evaporates, producing moist, soft, and long-lasting steam. By adjusting the temperature of the stove and the amount of water, everyone can find their preferred sauna experience.
Technical specifications
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Sauna room volume (min/max)
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15–40 m³
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Required chimney temperature class
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T600
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Connection opening diameter
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115 mm
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Stone quantity (max.)
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55
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Net weight
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130 kg
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Width x Depth x Height
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515 x 590 x 1430 mm
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+ adjustable legs
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0 – 50 mm
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Safety distances
(flammable materials, sides / top) |
200 / 800 mm
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Safety distances
(non-combustible materials) |
50 mm
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Door size
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Ø 210 mm
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Performance at nominal power
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Flue gas temperature (average – max)
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377.2 – 439.6 °C
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Nominal power
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30.8 kW
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Heat output to sauna room
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22.5 kW
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Carbon monoxide emissions (red. O₂ 13 %)
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3678 mg/m³ (n)
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Carbon monoxide emissions % (red. O₂ 13 %)
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0.29 %
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Overall efficiency
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73.1 %
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Ignition charge
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5.5 kg
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Additional charge
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2 kg
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Versatile Steam
We wanted to develop a stove that provides the best and most versatile steam possible. Our inspiration has been the long, moist, and soft steam of traditional smoke saunas.
The 'secret' of smoke sauna steam lies in how the stones are heated. The stones at the bottom get incredibly hot, while the surface stones remain relatively cool throughout the sauna session. When water is thrown on the stones, it doesn't evaporate immediately from the surface stones but flows down to the bottom of the stone chamber where evaporation occurs. As this steam travels through the cooler stones, a condensation process begins, softening and moisturizing the steam.
In Juup stoves, the stones are located directly above the firebox in a "stone bowl." This ensures that the stones heat up quickly and that every drop of water for steam evaporates into the sauna. The stones at the bottom heat up first and remain hot throughout the sauna session, just like in a smoke sauna.
The stones on the surface of the stone pot heat up slowly, which allows for different types of steam during the sauna session. The water that doesn't evaporate upon contact with the hot stones flows down to the bottom of the bowl and gradually evaporates. This results in soft, moist, and long-lasting steam.
By adjusting the stove's temperature and the amount of water, you can create exactly the kind of steam you prefer. Crisp steam is created by frequently throwing small amounts of water on the hot stones at the edges. If you prefer soft and moist steam, you can pour a larger amount of water onto the cooler stones. This produces a steam-bath-like experience.
Finnish craftsmanship
Each Juup artisan stove is unique and manufactured in Finland. To guarantee quality and durability, the same person builds the stove from start to finish. Each stove has a nameplate indicating the model name, serial number, and the builder's name. Juup Gösta has been awarded the Key Flag symbol by the Association for Finnish Work, which signifies Finnish manufacture and employment.
Instructions & Brochures
Warranty
The sauna stove body and firebox are constructed from 3mm carbon steel, and the firebox has only one weld seam. This ensures the stove lasts from generation to generation. Original stoves built by Gösta Juuppi in the 1960s are still in use today.
Due to its robust and durable construction, we provide a 10-year warranty for the stove in home use.
Sauna Stone Package – JUUP Gösta & Iivari
This sauna stone package is specifically designed for the JUUP Gösta & Iivari sauna heater, ensuring it operates according to the manufacturer's recommendations and provides consistent, pleasant steam.
The recommended stone size for this heater model is 10–15 cm (55kg), which ensures good airflow through the stone mass and efficient, durable operation of the heater.
Sauna stone options:
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Olivine Diabase
A durable, general-purpose stone for all heaters, providing ample steam. One box contains 20 kg of stones. -
Vulcanite
A durable, general-purpose stone for all heaters, providing ample steam. Vulcanite is darker in color than traditional olivine diabase. One box contains 20 kg of stones.
The correct size and material of the stones are an essential part of a functional sauna – properly chosen stones extend the life of the heater and improve the quality of the steam.
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