Gas Furnace Preferred 80% AFUE 110000 BTU Two-Stage Variable-Speed Multi-position 21-Inch-Wide Cabinet 820TB66110V21

The Gas Furnace Preferred 80% AFUE 110,000 BTU Two-Stage Variable-Speed Multi-Position (820TB66110V21) provides powerful and efficient heating with an 80% AFUE rating and a normalized 110,000 BTU input, engineered for performance and professional installation flexibility. It features a two-stage gas valve and a variable-speed ECM blower motor that delivers precise airflow, quiet operation, and improved humidity control while maximizing energy efficiency. The 21-wide cabinet (approximately 33 1/2" high - 29 deep) supports upflow, downflow, or horizontal installation through its full 4-way multipoise design, offering versatility across diverse jobsite layouts. Operating on 115 V single-phase power, the unit includes a 1/2" NPT gas connection that is field-convertible for natural gas or propane and supports up to 1,900 CFM nominal airflow. Certified for a temperature rise range of 40-70 °F with a maximum external static pressure of 0.15 in. w.c., this furnace is compatible with up to 13 venting configurations for sealed or ventilated combustion air. With Perfect Heat adaptive control, Fan On Plus continuous fan mode, QuietGuard cabinet insulation, and technician-friendly access panels, the 820TB66110V21 combines efficient performance, reliable operation, and service-ready design f(more...)