Vented fireplaces are the most common types of fireplaces. Normally, these are fireplaces that were originally used for burning wood logs. Vented gas log sets must have a vented chimney, and they can not be capped off or with a closed damper. Vented fireplaces give less heat than vent-free as it escapes through the chimney, although they are more realistic and lifelike due to the flame being able to touch the logs directly.
