Gas Furnace Preferred 80% AFUE 70000 BTU Two-Stage Variable-Speed Multi-position 17.5-Inch-Wide Cabinet 820TB48070V17

The Gas Furnace Preferred 80% AFUE 70,000 BTU Two-Stage Variable-Speed Multi-Position (820TB48070V17) delivers reliable, efficient heating performance with an 80% AFUE rating and a normalized 70,000 BTU input. This two-stage model features a variable-speed ECM blower motor that automatically adjusts airflow to maintain consistent comfort and quiet operation while maximizing energy efficiency. The 17.5 inch-wide cabinet (approximately 33 1/2" high 29 deep) supports upflow, downflow, or horizontal installation in a full 4-way multipoise configuration, providing flexibility for a range of residential applications. Operating on 115 V single-phase power, it includes a 1/2" NPT gas connection field-convertible for natural gas or propane and supports nominal airflow up to 1,400 CFM. Certified for a temperature rise range of 30“60 °F and a maximum external static pressure of 0.12 in. w.c., this furnace is approved for up to 13 venting configurations for sealed or ventilated combustion air. With integrated Perfect Heat adaptive control, Fan On Plus continuous fan option, QuietGuard insulated cabinet design, and technician-friendly service access, the 820TB48070V17 offers superior installation flexibility, quiet comfort, and long-term reliability for professional HVAC contractors.