If you need to purchase a gas-burning forced-air furnace but aren't sure how they work, here's what you need to know.

Add Yahoo as a preferred source to see more of our stories on Google. Heat pumps run on electricity and furnaces run on fossil fuels, natural gas, propane, or oil. Our experts say there's no clear ...

MAPLE GROVE, Minn — Furnace technicians say the colder it gets, the harder our furnaces have to work to keep our homes warm. This is the time when a lot of the smaller issues in your furnace can turn ...