Description
Product information updated 2026-10-02
Aito AK-57 ST – heat-storing sauna heater with an external firebox, intended for larger saunas and for maximum convenience of use. Stoking from another room allows you to maintain cleanliness and comfort in the sauna.
Due to its large stone capacity, this heater creates an extremely stable and long-lasting steam, which allows you to enjoy the sauna for a long time without additional stoking.
Specifications
| Model | AK-47 | AK-57 |
| Sauna volume, m³ | 8 – 12 | 9 – 20 |
| Stone capacity, kg | 60 | 90 |
| Diameter, mm | 470 | 570 |
| Height, mm | 1010 | 1160 |
| Weight (without stones), kg | 160 | 240 |
| Minimum sauna height, mm | 1200 | |
| Chimney diameter, mm | 150 | |
| Safe distance from front, mm | 1000 | |
| Safe distance from side / back, mm | 500 | |
| Safe distance from top, mm | 1200 | |
