Home / FAQs / FAQ About Furnace Installation and Replacement Cost / How Much Should I Expect to Spend to Convert an Electric Furnace to gas?

Between $5,000 and $15,000. When computing your final cost, remember to factor in additional costs such as ductwork installation ($8-12/linear foot), return air stack installation ($1,000-$5,000) and gas line installation costs ($15-$25/linear foot).