What rooms in a century home benefit most from a fireplace insert?

Living rooms and studies benefit most from a fireplace insert in a century home. These rooms often serve as cozy gathering spaces where warmth and ambiance matter most. In one 1912 home, the living room gained daily comfort from a direct-vent gas insert framed by a salvaged oak mantel, while the study received an electric insert for symmetry and decorative charm with low maintenance.