Approximately 30 minutes before retiring to bed, load the woodheater with a mix of small kindling and small-medium sized wood. 2. Position the air control in the medium to high position and allow woodheater to run for about thirty minutes, with the aim of getting it burning at a high temperature. This will reduce the moisture content in the fuel before shut down. (This helps reduce creosote formation in the firebox and flue). 3. After around thirty minutes, set the air control to a lower setting that you have found best for your requirements. 4. Turn the fan off and retire. The aim when overnight burning is to have only a few hot embers left in the bottom of the firebox in the morning. Not huge lumps of wood.