Derived from the Latin word fornax, meaning oven, a furnace is a large heating appliance designed to evenly distribute heat throughout a building. Furnaces accomplish this by burning fuel internally ...

Heat pumps run on electricity and furnaces run on fossil fuels, natural gas, propane, or oil. Our experts say there's no clear answer for which type is more energy efficient. Location plays a major ...

In an effort to reduce the greenhouse gas emissions that are causing climate change, the Department of Energy (DOE) proposed new energy-efficiency standards Monday for residential gas furnaces. The ...