While electric furnaces are cheaper, they may drive up electricity costs, especially during freezing winters. They are better in areas that experience mild winters. High-efficiency natural gas ...

Natural gas furnaces are the most common space heating equipment in the U.S. residential and commercial building markets. However, current residential natural gas condensing furnaces generate ...

While the initial cost of furnace installation can be significant, it is a worthwhile investment that pays off through energy savings and improved comfort. High-efficiency furnaces may have a higher ...

and 47% of them rely on natural gas as their primary heating fuel. However, most U.S. homes still use noncondensing units with an annual fuel utilization efficiency (AFUE) of ~80%, rather than ...