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.
It used to be that virtually every home in America, other than the south, would be built with a fireplace. As the times went on, and with the invention of central air, developers have stopped designing newer homes and apartments with fireplace features. This has resulted in the younger generations in America not experiencing day to day life with a fireplace. As newer home owners and renters have come into the market place, this generation has more design style choice. With the manufacturing of wall mounted fireplaces, the idea of have a fireplace has never been easier.