Compared to open fireplaces that burn wood, gas fireplaces are more efficient. Depending on the model, a gas fireplace may or may not require a chimney. For the installation of a flue, natural vent gas fireplaces must have an existing chimney. A chimney is not necessary for a vented or ventless gas fireplace, though. To know more detail visit the blog post about do you need a chimney for a gas fireplace.
