See price comparisons on popular gas furnacends..Note This article is only talking about gas propane furnace. If you are lo.ng for oil furnace, you can read our Trane Oil Furnace Buying Guide. Before y.Home Advisor’s Furnace Repair Cost Guide provides estimated repair costs for home heaters and their parts, including heat exchanger, blower motor, igniter and flame .Compare Gas Furnace Prices, Repair Installation Costs. Gas furnaces are one of the most popular, effective, and cost efficient ways to heat your home during .
Jump to Gas Furnaces Gas Furnaces $, to $,. Natural gas furnaces often cost a bit more than electric, and unless you re replacing an existing unit, they come with the added expense of putting in gas lines from the street and building extensive ductwork..