The average seasonal efficiency of a condensing furnace is what percentage?

The average seasonal efficiency of a condensing furnace is around 90%. This high efficiency is due to the design of condensing furnaces, which utilize innovative technology to extract heat from flue gases that would otherwise be expelled into the atmosphere. By condensing the water vapor in the exhaust gases, these furnaces can capture additional latent heat, significantly improving their overall efficiency compared to conventional furnaces.

Condensing furnaces operate with a higher efficiency rating because they make use of the heat from the exhaust gases, often resulting in annual fuel utilization efficiency (AFUE) ratings that can exceed 90%. This is particularly advantageous for homeowners looking to reduce energy costs and improve heating performance. Understanding that condensing furnaces achieve efficiencies of around 90% helps distinguish them from traditional models, which typically have lower efficiency ratings.