The diagram illustrates how pellet stoves and pellet boilers operate to provide warmth in a house.
Overall, it can be noted that both devices rely on wood pellets as their fuel source. The main distinction between them is that the stove heats the house by releasing hot air, whereas the boiler generates hot water that is circulated to radiators.
To use the pellet stove, wood pellets need to be placed into a compartment known as the fuel hopper, which turns them into fuel. The fuel then enters the combustion chamber, where it is converted into hot air. This hot air exits the stove through a combustion fan, while excess air is expelled via the exhaust duct located on the back panel of the stove.
Although the functioning of the pellet boiler is similar, it requires an additional element: cold water. The wood pellets are inserted into a designated compartment, which converts them into fuel. This fuel enters the furnace, where it combines with cold water to produce hot water. The hot water is then distributed throughout the house. Any smoke produced during this process is released through a smoke stack.