The damper is a movable plate that sits above the fireplace ahead of the flue. Be certain the fireplace damper is Doing the job thoroughly. There should be no particles preventing it from opening and shutting. It is a essential stage in understanding how to begin a fire in a very fireplace. https://outdoorfireplace55433.rimmablog.com/27733654/indicators-on-modern-electric-fireplace-you-should-know