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.
You can adjust the flames, and they don't waste heat the way the older models did by trapping it inside, or the way wood-burning fireplaces do by letting most of it escape out the chimney or flue. Contemporary fireplaces demonstrations that something pretty can be completely practical. And convenient. There are no ashes or dead embers to clean out regularly, and there is no need to be able to light a fire with newspaper. If you already have a wood burner, you can get a new gas insert to convert that old fireplace into a better fireplace.