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
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