Elevate your sauna experience with Harvia Black Vulcanite sauna heater stones. These stones are crafted from naturally durable volcanic rock that shines a deep, rich black when wet, giving your sauna a striking, high-end look while delivering outstanding performance.
Built to withstand rapid heat changes and retain warmth, these stones absorb heat deeply and release it evenly, helping your sauna reach optimal temperature faster.
Key Features
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Premium volcanic black vulcanite stones for consistent heat storage and release
- Beautiful dark black finish when wet adds style to your sauna interior
- Hard, durable stone that resists crumbling and produces less dust
- Stones sized 5–10 cm to fit a wide range of electric and wood-burning heaters
Sauna Stone Care Quick Guide
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Check & Rotate every 6 - 12 months: Stones at the bottom wear faster due to more heat and water exposure. Inspect all stones; replace any that are cracked or crumbling. Restack the newer/larger stones at the bottom, then place the older/smaller stones on top.
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Replace annually: Replace every year to maintain proper airflow through the heater, prevent element overheating, and keep your sauna performing safely and efficiently.
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Watch for signs: Poor airflow, slow heating, or less steam means it’s time to check stones.
WARNING: Sauna stones are known to 'pop' during the first heating sessions. For this reason, we strongly recommend heating your sauna all the way up with these stones on top of your heater, three times before you begin sitting in there and pouring liquid over the stones. This will allow for any popping to take place, following that, you can simply place the smaller stones back on top of your heater and you will be good to go.
Please note, this is an oversize item.
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