Is a High Efficiency Furnace a Good Choice?
If you are in the market for a new furnace, you have undoubtedly heard of a high efficiency furnace. But just what make a furnace highly efficient and what are the advantages over other types of furnaces? A high efficiency furnace is a furnace that converts most of it’s fuel into heat that is then circulated through your home. In order to be categorized as such, the furnace must convert at least 90% of the fuel to heat. Lesser conversion rates will earn the furnace the label of mid-efficiency or standard efficiency depending on the exact conversion percentage. Many models of furnaces greatly exceed the 90% minimum and furnace with greater than 92% efficiency are called ultra high efficiency furnaces. This percentage measure of efficiency is called the Annual Fuel Utilization Efficiency (AFUE) rating. The greater efficiency is generated by how the furnace works. Furnace efficiency is increased in large part by losing less heat heat via water vapor and heated gases. A high efficiency fur
