Several types of gas furnaces are on the market, including gas floor furnaces wherein heat enters a room through a floor vent, self-contained gas wall furnaces and efficiency furnaces that supply heat through ductwork to various rooms.
CostHelper.com claims that gas floor furnaces range between $900 and $1,500. Vented, self-contained wall furnaces cost between $500 and $1500. Efficiency furnaces are $1,700 to $6,000 depending on the level of efficiency.
Mid-efficiency gas furnaces have a lower price tag compared to high-efficiency gas furnaces. Mid-efficiency units can cost between $1,700 and $4,000 while high-efficiency units usually run between $2,500 and $6,000, according to CostHelper.com.
Having qualified professionals handle the installation aspect of gas floor furnace and self-contained gas wall furnace installation projects costs between $1,000 and $2,000.
There are several additional costs linked with purchasing and installing a new gas furnace. Having ductwork installed can nearly double the price tag of gas furnace installation. It can cost between $25 and $75 to schedule for a required fire inspection.
There are ways to offset the overall cost of a furnace installation. Purchasing a high-efficiency gas furnace can earn the consumer a tax credit of up to $250, according to CostHelper.com.