However, it is not a big problem because you can always buy special cleaners for fireplace screens and glass doors. More often the construction of furnaces have special channels that send air flow along the inner surface of the door, and don't allow the soot particles settle on the glass. If your fireplace has no doors at all, you can use a variety of nets and shutters that can be installed directly in front of the firebox. They help to manage the air flow and thus regulate the heat level.
They are the most flexible and versatile choice of home heating systems. They can perfectly fit almost everywhere in your house as long as there is adequate spacing to safely and seamlessly install the vent pipe. So, with wood stoves, you can zone-heat everywhere in your house regardless of the size and shape of the room.