Gas Furnace Evolution 97% AFUE 120000 BTU Modulating Multi-position 24.5-Inch-Wide Cabinet 987MC66120C24

The Gas Furnace Evolution 97% AFUE 120000 BTU Modulating Multi-position 24.5-Inch-Wide Cabinet (987MC66120C24) offers high-efficiency, installer-ready performance with a nominal 120,000 BTU input and approximately 117,000 BTU output, certified at 97% AFUE in up-flow/horizontal orientation. This unit incorporates a modulating gas valve paired with a constant-airflow, variable-speed ECM blower motor and a variable-speed inducer for precise load matching and quiet operation. The 24.5 inch-wide cabinet measures 35 height - 29.5 depth, and supports true 4-way multipoise installation (up-flow, down-flow, horizontal) with direct-vent/sealed-combustion or ventilated-combustion-air configurations via sidewall or vertical venting. Designed for 115 V single-phase supply on a 20 A circuit and features a ½ NPT gas connection convertible for natural gas or propane. With its durable aluminized-steel primary and stainless-steel secondary heat exchangers, fully-insulated cabinet, and manufacturer-certified leakage under 2.0% at 1.0 in. w.c., this furnace delivers advanced service features, flexible installation and top-tier efficiency for professional HVAC applications.