Originally Posted by DKVA
I have a gas fireplace now and have had one before-as far as I know you do not have a flue that is only on a wood burning fire place. Why you are feeling cold air entering maybe some one can give advice as I have never had this with a gas fire place.
Quick note...Both my gas fireplaces have a flue/ damper/ full chimney and one of them has ALWAYS been gas...however it's a standard fire place with doors that open ect. Perhaps they are doing things differently now...my house is 15 years old.
Hopefully someone will know more about type of fireplace the OP has.