The answer to 'difference between gas furnace and electric furnace' is that gas furnaces use natural gas or propane to generate heat, while electric furnaces use electricity. Gas furnaces are generally more efficient and cost-effective to operate, but require a gas line connection. Electric furnaces are simpler to install and maintain, but can be more expensive to run in many areas due to the higher cost of electricity.
Gas furnaces are well-suited for homes with existing gas lines, as they provide efficient and consistent heating. Electric furnaces are a good choice for homes without access to natural gas, or in regions where electricity is more affordable than gas. The type of furnace that is best for your home will depend on factors like your local utility costs, climate, and home layout.