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Electric Fireplaces in the Wall Since they don't require venting or chimneys wall-mounted electric fireplaces are a simpler option than gas or wood fireplaces. Many homeowners can put in these fireplaces themselves in an afternoon. However, certain installations might require an electrician to connect the electrical power. Refer to the installation guidelines for your fireplace or the dealer to get tips. Also, think about whether you want it to be recessed or attached