Hi there I am new to fireplaces. I have a heatolator insert fireplace,
which is just great. If I close the damper (its either open fully or
closed) it still seems to burn, just slowly, and no smoke enters the
house. Am I supposed to close the damper before I go to bed, if there
are just coals left? Or should I leave it open all night until its
cold?

Thanks and sorry for the novice question!

Dean