A. Most fireplaces/chimneys were originally built with a cast iron damper. Unfortunately these types of dampers warp and rust out over time, preventing your fireplace from becoming properly sealed. Installing a top-sealing damper can dramatically cut your energy costs by preventing cold air from ever entering your chimney because it is sealed off from the top.
With the rising cost of heating, is there anything I can do to minimize heat loss in the area of my fireplace?
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