Gas Furnace Comfort 80% AFUE 45000 BTU Single-Stage Multi-position 14.2-Inch-Wide Cabinet

The Gas Furnace Comfort 80% AFUE 45,000 BTU Single-Stage Multi-Position (58SB0B045M14--12) is engineered for dependable residential heating performance and flexible installation in upflow, downflow, or horizontal configurations. Delivering 45,000 BTU input at 80% AFUE, this compact model fits a 14.2-wide cabinet ideal for tight-space applications while maintaining full service access. It features a Multi-18-Speed Constant Torque (MCT) ECM blower motor for quiet, consistent airflow, with an aluminized-steel heat exchanger built for long-term reliability. The unit operates on 115 V single-phase power with approximately 9 A running current and a 15 A circuit requirement, and includes a 1/2" NPT gas connection. With multiple venting configurations and a durable cabinet design, this furnace provides efficient comfort, straightforward installation, and simplified maintenance for technicians.