09/11/2026
Why does this sauna heater have so many stones? đȘš
Itâs not just for looks.
HUUM sauna heaters are designed around a large mass of sauna stones. As those stones heat up, they store and radiate heat throughout the sauna, helping create the soft, enveloping heat associated with a traditional sauna experience.
But the real difference comes when you add water.
Pouring water over the hot stones creates löyly â the burst of steam and humidity that temporarily changes how the heat feels against your skin. More exposed hot stone gives you plenty of surface area for creating that experience.
The result is a sauna session you can adjust to your preference: enjoy the dry heat as-is, or add water to the stones when you want a more intense wave of warmth and humidity.
Itâs one of the reasons the heater is such an important part of choosing a sauna â it doesnât just heat the room. It shapes the experience.
Interested in adding an outdoor sauna to your backyard? Talk with the team at Swimming Pool Services to explore your options.