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Tips For Choosing an Electric Fireplace Insert For Wall Unlike wood or gas fireplaces, electric models do not require a chimney or a flue. They plug into an outlet on the wall to heat your home. You can install this type of insert in an existing fireplace or in an recessed wall. To create around the opening and then to drywall the area, you will require basic carpentry knowledge. Real Flame(r), Wall Mounted/Recessed, Electric Fireplace Insert Developed as an alternative to