Gas Furnace Comfort 96% AFUE 80000 BTU Single-Stage Multi-position 21-Inch-Wide Cabinet

The Gas Furnace Comfort 96% AFUE 80000 BTU Single-Stage Multi-position (59SC6A080M21--20) delivers an 80,000 BTU input with approximately 78,000 BTU output at 96% efficiency, designed for flexible upflow, downflow, or horizontal installation in a 21-wide cabinet that allows full service access and smooth coil alignment in larger mechanical rooms. It features a single-stage gas valve and a Multi-18-Speed Constant Torque (MCT) ECM blower motor for quiet, efficient airflow and dependable comfort. The unit operates on 115 V single-phase power with a typical full-load current near 9 A on a 15 A circuit, and includes a ½ NPT gas connection factory-set for natural gas with field-convertible propane capability. With a 4-way multipoise design supporting up to 13 venting configurations, direct-vent or single-pipe venting compatibility, cabinet dimensions approximately 35 high - 21 wide - 29.5 deep, and durable aluminized-steel primary plus stainless-steel secondary heat exchangers, this Comfort Series furnace offers technician-friendly installation, streamlined service, and long-term reliable performance.