I was looking for a gently used fireplace insert and saw a posting for a Jotul System 18.  I couldn't find any information on it, and then found out why.  The insert is 12 years old.  I was told by the owner that it was only used a few times.  My concern is that it doesn't use firebricks or a blower.  I have a small house, but is an insert without a blower a waste of time and money? Also, I wanted to install a steel liner for safety reasons and am not even sure that is possible with this type model.  I would appreciate any advice you might have.