The Harvia AC3055 Elite Pro sauna heater stones are crafted from premium Finnish olivine diabase and heat-treated at approximately 1000° Celsius for durability in frequently heated sauna environments. The split-face design ensures optimal heat storage and supports efficient steam generation when water is applied.
These stones are engineered for use with both electric sauna heaters and as the surface layer on wood-burning stoves. Their dense composition and microporous structure provide high thermal conductivity, resistance to temperature fluctuations, and soft, consistent steam output.
Each stone is naturally unique in shape and size, allowing for precise stacking and air circulation. The AC3055 stones combine durability, thermal performance, and reliability for intensive sauna use.