Which type of gas furnace is described as a 90+% high efficiency condensing gas furnace?

A 90+% high efficiency condensing gas furnace is designed to achieve a significantly higher efficiency rating compared to standard or mid-efficiency gas furnaces. These high-efficiency models utilize advanced technology to capture and condense the moisture content in the exhaust gases, thereby recovering additional heat that would otherwise be lost.

The measurement of efficiency for these furnaces is indicated by their Annual Fuel Utilization Efficiency (AFUE) rating, which in this case exceeds 90%. This means that more than 90% of the fuel consumed is converted into usable heat for your home, making them not only environmentally friendly but also cost-effective in terms of energy consumption. As a result, this type of furnace contributes to lower energy bills and reduced greenhouse gas emissions, reflecting a significant advancement in heating technology compared to lower-efficiency options.

In summary, the classification of a 90+% high efficiency condensing gas furnace is reserved for those that maximize fuel use efficiency through condensing technology, distinguishing it from conventional and mid-efficiency furnaces which operate at lower percentages.