Why is the blower fan system better?
You should only purchase a furnace that has a forced air draft blower fan. Do not make the mistake of purchasing a natural draft furnace which has much lower efficiency, and will only burn certain types of highly processed wood. Natural draft furnaces only have a small door that opens allowing air to feed the fire when needed. However, since this system does not control the amount of air entering the firebox, the fire takes a long time to recover, and then burns uncontrolled which is inefficient and harmful to the system. Furthermore, natural draft furnaces will not burn large pieces of wood, or green wood. A forced draft system blows only a measured amount of air to the fire. This allows for quick heat recovery when necessary while at the same time maintaining a controlled burn.
