Abstract: Kemplang is a crunchy traditional snack of the common people in Palembang, South Sumatra, Indonesia. Normally, it roasted on an open charcoal furnace, where the smoke, the heat and the combustion gases spread out in all directions. Vertical Energy Saver (VESA) is an equipment that has already patented created to accomodate the heat, the gas, fly ash and particulate matters from charcoal furnace used for roasting and preheating the kemplang in VESA and dispose the residual heat and gases to a place that is safe for humans breath