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5 Best in Wall Electric Fireplaces The plug-and-play electric fire can create provide warmth and ambiance in any room. Our top choices are simple to install and have customizable features like different flame and LED flame bed colors and an option to not heat to provide a soothing glow. These thin wall-mount fireplaces can be installed on top of a mantelpiece, or recessed into a wall. Some require complex installation that could require the use of a carpentry skill or assistance from a professiona