Air Heating Sauna vs Thermal Heating Sauna

When choosing a heater, the stone-to-air ratio determines the \"softness\" of the heat. This infographic compares a low-stone air heater, which heats the room quickly but loses temperature fast, against a high-stone rock heater designed for long-lasting radiant heat and superior \"löyly\" (steam). Because rock volume affects the power requirements of the room, users should consult a sauna heater sizing calculator to ensure their chosen model can handle the thermal load. For those building a custom space, utilizing a sauna calculator helps determine if a high-mass heater requires a different power output than a standard convection unit.