• Vented fireplaces – These fireplaces are much like traditional wood-burning fireplaces. They require a vent to filter the air in and out.
  • Unvented fireplaces – These fireplaces do not need any venting at all.

Are cast iron fireplaces dangerous?

Cast iron fireplaces are not dangerous. In fact, they can actually be safer than conventional wood-burning fireplaces when it comes to carbon, smoke, and fine particulates that are released into the air.