Replacing sauna rocks
Generally sauna rocks do NOT need to be replaced. It’s best to clean them (See FAQ: How should I clean my sauna heater and rocks?) and remove small rocks and any rocks that are cracked. When you received your sauna rocks package. You probably still have some extra rocks you can use when you repack the sauna heater.
Repack the sauna rocks loosely, covering the tops of the elements with only one layer of rocks. It’s possible that your heater may cut out if the rocks are too tight. In which case, the heater is not getting enough airflow and the sensor is cutting the heater off.
Also see our vulcanite sauna rocks in the store.