Sauna Library - Aufguss
Sauna Aufguss is much more than pouring water onto hot sauna stones. It is a controlled interaction between water, heat, water vapour, air movement, human thermoregulation, fragrance and professional technique.
When water is applied to heated sauna stones, it evaporates and changes the humidity and water-vapour pressure inside the sauna cabin. This alters the conditions for sweat evaporation and can increase heat transfer to the skin. Fanning then redistributes the hot, humid air and changes the local convective and evaporative conditions around the body. This explains why an Aufguss can feel dramatically hotter even though the actual air temperature of the sauna may change only slightly.
The Sauna Aufguss section explores the physics and physiology behind this process. Topics include Aufguss water quantity, water vapour, absolute and relative humidity, vapour pressure, evaporation, condensation, latent heat, heat transfer, thermal load and professional fanning techniques.
But professional Aufguss involves more than physics. Fragrances and essential oils, communication with guests, ritual structure, timing, intensity, safety and the purpose of the Aufguss all influence the experience. A health-oriented Aufguss, a sensory ritual and an event or show Aufguss may use similar technical elements while pursuing very different objectives.
These articles examine Aufguss science, Aufguss techniques, sauna fanning, fragrance application, thermal safety and professional Aufguss practice without reducing quality to spectacle or maximum intensity.
A good Aufguss is not defined by how much water is used or how strongly the air is moved. It is defined by controlled heat transfer, an appropriate thermal dose and professional execution.
