Trane S9V2C080U5VSBA 80,000 BTU Two-Stage Variable Speed 97% Efficiency Condensing 21" Gas Furnace

Trane S9V2C080U5VSBB – 80,000 BTU/H Two-Stage Condensing Gas Furnace

Deliver powerful, high-efficiency comfort with the Trane S9V2C080U5VSBB, an 80,000 BTU/H input two-stage condensing gas furnace designed for upflow installation and convertible to horizontal left or right configurations. Part of Trane’s advanced S-Series platform, this model combines 97% AFUE performance, variable-speed airflow, and durable stainless steel heat exchanger construction for dependable residential heating and long-term energy savings.

Two-Stage High-Efficiency Heating Performance
The S9V2C080U5VSBB provides staged heating output for improved comfort and reduced temperature swings. It delivers 52,000 BTU/H input in first stage with 51,300 BTU/H heating capacity (ICS), and ramps up to 80,000 BTU/H input in second stage with 77,450 BTU/H capacity. With a 97.0% AFUE rating, this furnace is engineered to maximize fuel efficiency while maintaining reliable warmth throughout the heating season.

Variable-Speed ECM Blower for Precise Airflow Control
Equipped with a 1 HP variable-speed blower motor, the S9V2C080U5VSBB automatically adjusts airflow to match heating and cooling demands. The system delivers at least 400 CFM per ton at 0.5 in. w.c. external static pressure, with setup airflow options down to 290 CFM/ton for enhanced duct flexibility and customized indoor comfort.

Durable Dual Stainless Steel Heat Exchanger Construction
This furnace features a fired 409 stainless steel primary heat exchanger and a 29-4C™ stainless steel secondary heat exchanger. The secondary exchanger reclaims additional heat from flue gases that would otherwise be lost, improving efficiency and providing long-term corrosion resistance for dependable performance.

Flexible Multi-Poise Installation Options
Shipped ready for upflow installation, this model converts easily to horizontal left or right configurations without special kits. Every orientation offers multiple venting options, supporting installation flexibility in basements, closets, and tight mechanical spaces. Improved vent length allowances enhance adaptability for a variety of residential layouts.

The cabinet measures 34" H × 24.5" W × 28-3/4" D (uncrated) and weighs approximately 139 lbs net, providing a compact yet high-capacity solution compatible with industry-standard coils and accessories.

Advanced Integrated Furnace Control with Digital Diagnostics
The integrated furnace control includes a digital display with setup, status, and diagnostic functions, storing the last six fault codes for easier troubleshooting. The control manages blower operation, gas valve staging, flame sensing, and safety monitoring for reliable performance and simplified service.

Quiet, Safe & Reliable Operation
The S9V2C080U5VSBB includes multiport inshot burners (5 burners), a redundant two-stage gas valve, and a 120V silicon nitride hot surface igniter. The integrated control continuously monitors flame presence, pressure switches, and safety limits to ensure dependable and safe furnace operation.

Energy Star® Certified Performance
This model meets Energy Star® requirements and is certified to ANSI Z21.47 / CSA 2.3 standards. Airtight cabinet construction limits air leakage to 1% or less of nominal delivered airflow, supporting efficient system operation and reduced energy consumption.

Engineered for Efficient Mid-to-Large Residential Heating
Ideal for homeowners seeking reliable, staged comfort control with higher airflow capacity, the Trane S9V2C080U5VSBB delivers 97% AFUE efficiency, variable-speed airflow performance, and durable stainless steel heat exchanger construction in a compact 34-inch cabinet. As part of the S-Series furnace family, it provides flexible installation, long-term reliability, and consistent warmth throughout the heating season.