How the Excretory and the Respiratory system work together How the Excretory and the Circulatory system work together How the Excretory and the and the Digestive system work together
1 Top vented gas fireplace inserts cost $750 to $3,000, and installation adds another $500 to $1,000. 2  Direct-vent gas fireplaces cost $1,000 to $3,500, plus $500 to $1,000 for installation.
1 Ventless (also called vent-free or unvented) gas fireplaces don't need a chimney or vent, and are either zero clearance (right against a wall) or close clearance (a few inches away). 2  They cost about $400-$1,500 plus installation of the gas lines and any desired mantle or surround.