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Electric Fireplaces in the Wall Since they do not require venting or chimneys, wall-mounted electric fireplaces are a much simpler solution than wood or gas fireplaces. Most homeowners can install them on their own over the course of a weekend, but certain installations require an electrician to provide the electrical hookup. Consult the installation instructions for your fireplace or the dealer for tips. Think about whether you want the fireplace to be recessed into the wall or