Harvia Cauldron Water Heater

The vermiculite insulation is integrated into the design to keep the exterior surface of the cauldron cooler than a standard metal tank. This helps reduce the risk of accidental burns if someone brushes against the unit during a sauna session.

The fire chamber is designed to be replaceable. This feature significantly extends the overall lifespan of the unit, as you can swap out the internal components that experience the most wear without having to replace the entire 80-liter tank.

The unit requires a chimney connection with a smoke outlet diameter of 5.5 inches. Ensure your sauna setup can accommodate this size and that your chimney installation complies with local fire safety codes for wood-burning appliances.

The Harvia Cauldron is specifically engineered as a wood-burning water heater for sauna environments. It is not intended for potable water consumption or for use as a general-purpose stove for cooking.

The unit measures 31.9 inches in height with a width and depth of 23.2 inches. Because it is a floor-standing wood-burning unit, you must also ensure there is adequate clearance from combustible materials as dictated by your local building and fire safety regulations.