Gas Heat ESCO Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

High-efficiency gas furnaces stand out primarily due to their higher Annual Fuel Utilization Efficiency (AFUE) ratings. AFUE measures the efficiency with which a furnace converts gas into heat over a year of operation. Traditional models typically have lower AFUE ratings, meaning they waste more energy in the form of exhaust gases that escape up the flue. In contrast, high-efficiency models are designed with advanced technology that allows for better heat retention and more effective combustion processes. This results in more heat being delivered to the living space relative to the amount of fuel consumed, translating to significant energy savings and reduced utility bills for the homeowner.

The higher AFUE ratings also contribute to lower greenhouse gas emissions, making these furnaces a more environmentally friendly choice. Homeowners not only benefit from cost savings but also minimize their impact on the environment, an increasingly important factor in today's energy consumption considerations.