A furnace heat exchanger keeps dangerous gases out of the air circulating in the building. It's a must-have on any furnace that burns gas or oil.

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 ...

It turns out the oil-burning colossus in the basement of my childhood home wasn’t a furnace, as I thought until recently. My ...

Heat pumps use less energy than furnaces or central air conditioners. Taking advantage of rebates can reduce your heat pump installation costs. In Canada’s climate, having a good source of home ...

These are the best whole-house heat pumps from Consumer Reports' tests. These heat pumps are more efficient and can save you money.