High-efficiency furnaces are heating systems designed to convert a higher percentage of fuel into usable heat for your home. They typically achieve an Annual Fuel Utilization Efficiency (AFUE) rating of 90% or higher, meaning that 90% or more of the energy consumed is used for heating. This efficiency helps reduce energy bills and lowers greenhouse gas emissions, making them an environmentally friendly choice. These furnaces often use advanced technology, such as a secondary heat exchanger, to capture and reuse exhaust gases. Many high-efficiency models are compatible with smart thermostats, allowing for better temperature control and energy management. Investing in a high-efficiency furnace can lead to significant long-term savings and increased comfort.