Wood pellets are placed into a hopper (1)
An electric auger (3) feeds the pellets into a burn grate (7) at a rate determined by the temperature control
An automatic igniter (5) starts the fire (optional on some units)
Fire heats the air in heat exchange tubes (6) and a convection fan (2) blows this heated, uncontaminated air into the room where a stove is situated
There is an ash pan (4) below the burn grate into which the residue falls. Typically, a stove only needs to be filled once a day and the ash pan needs to be emptied only once or twice a year.