How To Tell If A Fireplace Flue Is Open. If you have a throat damper, you can tell if it is closed if you see a barrier above your head. Likewise, what are the vents on my fireplace for?
If you don't feel any cold air coming down the chimney, it means that the damper is closed. Consider the following three tricks; This is really simple and one of the surest ways to check whether the damper is open or closed.
If it’s hooked to the side of the fireplace wall, then this probably means that the damper is closed.
You turn the handle to a vertical position to open the flue damper and back to a horizontal position to close it. You feel an airflow, open a door or window on the same floor as the fireplace until the downdraft stops or reverses and air flows up (tape tissue to the fireplace opening and watch its movement). Can i ajust the stop on handle to close it. If you have a throat damper, you can tell if it is closed if you see a barrier above your head.