The stove is so novel that the EPA can’t figure out whether to call it a wood stove or a pellet stove. That’s because it’s neither—or both—depending on how you look at it.
The stove burns logs that are pressed out of sawdust. The logs are automatically fed by a gravity system one after the other. There is no auger, which all pellet stoves have, but the stove achieves consistently high efficiency and low emissions that no wood stove can get. It's the first one of its kind on the market, and the EPA and the entire stove industry doesn’t quite know what to call it yet.