which way do you turn the chimney flue to CLOSE it?

Answer 1

If it is a screw type, then remember C and O., in that order.

Remember CO stands for carbon monoxide, which you do not want in the house, right? So, C and O - in that order - are not too difficult to remember.

Now, C is on the left, O is on the right. Keep turning the handle to the left to close. Keep turning the handle to the right to Open.
Got it?

Answer 2

Usually to the right to close it. Just light a piece of news paper in the fireplace, and watch it. If smoke starts to roll into the room, it means the flue is closed.

Answer 3

the best way to remember damper is sitting the same way the handle is if handle is horizontal then is closed if vert its open