The S8B1 furnace offers single stage heat for comfort in cold weather, while maintaining the DNA that American Standard is known for: quality and reliability. The S8B1 is rated at 80% gas efficiency (AFUE), providing energy savings and a consistent flow of warm, comfortable air in both winter AND summer.

80% AFUE

  • 26 – 120 mbth input
  • Single-stage heat
  • 9 tap Constant Torque ECM blower
  • Single-speed draft inducer
  • Silicon nitride igniter
  • Certified to 1.4% air leakage
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