how much does it cost to install a gas fire
1 Inserts cost $1,200-$2,900, with professional installation adding another $600-$1,000. 2  A direct-vent gas fireplace doesn't need a chimney and is a way to add a fireplace where there isn't one. 3  Installation is through an outside wall, and a pipe-within-a-pipe feature lets air in and exhaust out with just one vent.