A high-efficiency furnace is a heating system designed to convert a greater percentage of fuel into usable heat for your home. These furnaces typically have an Annual Fuel Utilization Efficiency (AFUE) rating of 90% or higher, meaning they use at least 90% of the energy they consume for heating. This efficiency helps reduce energy bills and environmental impact. High-efficiency furnaces often utilize advanced technology, such as two-stage burners and variable-speed blowers, to optimize performance. They may also include features like sealed combustion chambers, which draw air from outside the home, improving safety and efficiency. Overall, these systems provide reliable warmth while minimizing energy waste.