Gas Furnace Product Offering

Feature Comparison
Gas Furnace Product Offering
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Gas Furnace Product Offering
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Gas Furnace Product Offering
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Gas Furnace Product Offering
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Model Family987M926T912S310AAV
Annual Fuel Utilization EfficiencyUp to 98.3% AFUEUp to 96.5% AFUEUp to 92.1% AFUE80% AFUE
Energy Star RatedENERGY STAR®ENERGY STAR® N/AN/A
Blower MotorVariable-speed full-featured ECM Variable speed, high-efficiency ECM Fixed-speed ECMFixed speed
Gas ValveModulatingTwo-stage Single-stageSingle-stage
Fan Heating OperationModulatingTwo-stage operationSingle-stageSingle-stage
Factory Warranty Parts10-year parts limited warranty upon registration10-year parts limited warranty upon registration10-year parts limited warranty when properly registered.10yr parts limited warranty
Heat Exchanger WarrantyLifetime limited warrantyLifetime limited warranty20-year limited warranty on heat exchanger when properly registered.20yr heat exchanger limited warranty
Sound LevelQuieTech™QuieTech™QuieTech™QuieTech™
Manufacturer's Stated Benefits
  • Precise gas modulation with movements in 1% increments
  • Variable-speed blower allows unit to operate at lower speeds up to 90% of the time, ensuring consistent airflow and temperature.
  • Perfect HeatTM technology monitors changing conditions to adjust heating
  • Perfect HumidityTM technology removes up to 127% more moisture than a standard furnace
  • Fan On PlusTM technology
  • Enjoy the ultra-quiet performance and even-temperature comfort of variable speed air delivery. It's also the best choice for imp
  • Perfect Heat™ technology means consistent comfort by adjusting system operation to changing conditions
  • Perfect Humidity™ technology capability with appropriate control and equipment removes more moisture than a standard furna
  • Fan On Plus™ lets you choose the speed of continuous fan operation with a compatible control
  • Insulated cabinet for quieter operation
  • Fan On Plus™ technology lets you choose the speed of continuous fan operation with a compatible control
  • PerfectLight™ hot surface igniter eliminates gas-wasting pilot light
  • Insulated cabinet for quieter operation
  • Allows gas furnace/heat pump system combinations for best heating efficiences
  • Filter cabinet
  • Pilot-freePerfectLight™ ignition
  • Insulated cabinet for quieter operation
  • Hybrid Heat® system capable
  • Filter cabinet