Gas Furnace Infinity 80% AFUE 90000 BTU Two-Stage Multi-position 21-Inch-Wide Cabinet

The Gas Furnace Infinity 80% AFUE 90000 BTU Two-Stage Multi-position (58TN0B090C21--20) provides a 90,000 BTU input with 80% AFUE efficiency in a 21-wide, 4-way multipoise cabinet designed for up-flow, down-flow or horizontal installation. Its variable-speed, constant-airflow ECM blower motor and two-stage gas valve deliver smoother transitions between heating stages, quieter operation and improved humidity control. The unit is configured for 115 V single-phase power, with a typical unit ampacity around 14 A and a maximum fuse or breaker rating of 20 A. The factory ½ NPT gas connection supports natural gas and is convertible to propane. With a cabinet height of approximately 33 1/3 and depth about 29, its 21 width enables easier fit in larger systems, and the multipoise design offers up to 13 venting configurations for flexible installation and technician-friendly access.