Gas Furnace Infinity 80% AFUE 135000 BTU Two-Stage Multi-position 24.5-Inch-Wide Cabinet

The Gas Furnace Infinity 80% AFUE 135000 BTU Two-Stage Multi-position (58TN0B135C24--22) delivers 135,000 BTU input at 80% efficiency in a 24.5-Inch-Wide cabinet engineered for up-flow, down-flow or horizontal (4-way) installation. Equipped with a two-stage gas valve and a variable-speed, constant-airflow ECM blower motor, this model ensures smooth transitions between loops, quieter low-stage operation and enhanced humidity control when paired with compatible system controls. Designed for 115 V single-phase power with a unit ampacity around 18.8 A and a maximum fuse/circuit of 20 A, it features a ½ NPT gas connection (factory-set for natural gas, convertible to propane) and a certified temperature rise range of 40-70 °F. The cabinet height is approximately 33 1/3, depth about 29, and the aluminized-steel primary heat exchanger ensures long-term reliability, making this furnace ideal for large residential applications requiring professional installation and service-friendly access.