The S9B1 furnace offers a constant torque ECM blower motor for comfort in cold weather while maintaining the DNA that American Standard is known for quality and reliability. The S9B1 is rated at 92.1% gas efficiency (AFUE), providing energy savings and a consistent flow of warm, comfortable air in both winter AND summer.

92.1% AFUE

• 40 – 120 mbth input
• Single-stage heat
• 9 tap Constant Torque ECM motor
• Single-speed draft inducer
• Silicon nitride igniter
• Single or two-pipe vent options
• Stainless steel heat exchanger