Harvia AC3045 Black Vulcanite Sauna Heater Stones, Split-Face, 10-15cm

Enhance your sauna experience with the Harvia AC3045 Vulcanite Sauna Heater Stones, designed for exceptional heat retention, efficient steam production, and lasting performance. Formed from fine-grained volcanic rock that originated millions of years ago, these premium sauna stones feature a distinctive dark grey appearance that transforms to a rich black when wet, adding a striking natural accent to any sauna.

The split-face design maximizes surface area to store heat efficiently and rapidly vaporize water, producing smooth, abundant steam with every pour. Easy to stack, the stones promote excellent airflow throughout the heater, ensuring even heat distribution, high thermal conductivity, and dependable performance through repeated heating cycles.

Compatible with electric sauna heaters or as a surface layer for wood-burning sauna stoves, the Harvia AC3045 Vulcanite Sauna Heater Stones are a safe, clean, and durable choice for residential and commercial sauna applications.

Features

• Premium fine-grained volcanic rock construction
• Dark grey finish that turns black when wet for a distinctive appearance
• Split-face design for superior heat retention and efficient steam production
• Large surface area quickly vaporizes water for abundant, consistent steam
• Easy to stack for optimal airflow and even heat distribution
• High thermal conductivity with excellent resistance to temperature fluctuations
• Compatible with electric sauna heaters
• Suitable as a surface layer for wood-burning sauna stoves
• Free from harmful ingredients
• Stone sizes range from 4–6 in. (10–15 cm)

Includes

• One 44 lb. (20 kg) box of Harvia AC3045 Vulcanite Split-Face Sauna Heater Stones

Specifications

• Model: AC3045
• Color: Black (Dark Grey Dry / Black When Wet)
• Material: Fine-Grained Volcanic Stone
• Shape: Split-Face
• Stone Size: 4–6 in. (10–15 cm)
• Weight: 44.1 lbs. (20 kg)
• Compatibility: Electric sauna heaters and wood-burning sauna stoves