The Ducane 97G2DF090CE16K is a high‑efficiency downflow gas furnace designed for residential heating systems that require strong output and compatibility with larger cooling equipment. With a 97% AFUE rating and a 90,000 BTU/hr heating capacity, it is suited for homes that need a dependable, energy‑efficient heat source capable of supporting 4‑ton cooling. Its two‑stage heating operation helps maintain more even temperatures by adjusting performance to match demand, while the ECM blower motor delivers steady airflow and quieter operation across different conditions. Because it is built for downflow installation, it works well in homes where ductwork is located below the furnace, such as in closets or utility spaces. A stainless‑steel secondary heat exchanger adds durability, making the unit a practical option for homeowners looking for reliable, long‑term heating performance within a compact design.