This means that with a fireplace blower, the heat doesn’t just come from the fire itself, it also comes from the tubes. Since there’s some air intake, the force propels the air further into the room in order to enhance heat distribution.
However, there’s the risk of the space getting too warm with multiple heat sources. That’s where the temperature-activated fireplace blowers come in. They have an attached thermometer so that once the temperature gets to a certain level, the blower automatically shuts down.