I put in a Jotul 550 insert this year in my 2,500 sf ft home and have a question regarding increasing the efficiency. I have a 25 ft. brick chimney on the outside of the house. The chimney was lined with a SS 6" liner (no insulation - but block off plate and top plate installed). The face of the fireplace and hearth are covered with large field stones with hold some heat and I have a large firebox. My question is can I keep more heat in the house by insulating around the stove in the firebox area or put a heat reflector behind the stove or even place some soap-stones in the firebox around the insert? Is any of this worth the cash and effort? Thanks