I have never had that happen but from reading here a lot my first suggestion is that you check your chimney for any blockages or creosote build up.
How dry is your wood? Recommended moisture content by many on this forum = 20% or lower to be considered seasoned.
How hot are your burning?
Weather conditions do make a difference but you said it is smoking every time you open the door despite the fact you still have low temps. at night that are equal to daytime temps. that you had when you had no smoke problems.
How dry is your wood? Recommended moisture content by many on this forum = 20% or lower to be considered seasoned.
How hot are your burning?
Weather conditions do make a difference but you said it is smoking every time you open the door despite the fact you still have low temps. at night that are equal to daytime temps. that you had when you had no smoke problems.