Gas Furnace Ion 80% AFUE 45000 BTU Two-Stage Multi-position 17.5-Inch-Wide Cabinet

The Gas Furnace Ion 80 80% AFUE 45000 BTU Two-Stage Multi-position (F80CTL0451712B) delivers approximately 45,000 BTU input at 80% AFUE efficiency in a compact multi-position design supporting up-flow, down-flow and horizontal installations. Built with a variable-speed ECM blower motor and two-stage gas valve for refined airflow and heat delivery, the 17.5 inch-wide cabinet (nominal width) offers a height of about 33-1/3 and depth of 29 to fit into constrained mechanical spaces. It operates on 115 V single-phase power with an approx. 9 A draw on a 15 A circuit, and uses a ½ NPT gas connection (natural gas with propane conversion kit available). The unit is designed for Category I venting with three-position vent elbow capability and common-venting compatibility, and it supports a typical temperature rise range of 30“60 °F under high-stage conditions. Engineered for technician ease of installation and servicing, the F80CTL0451712B combines dependable performance, balanced airflow control and flexible configuration options for modern residential HVAC systems.