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80% AFUE Furnaces

GR9T80/GD9T80

  • 80% AFUE Performance
  • Two-stage gas valve provides quiet, economical heating
  • Two Stage, 9-Speed ECM motor

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GR9S80-U

  • Single-Stage, Multi-Speed ECM
  • Multi-Position, Ultra-Low NOx

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GRVS80-U

  • Single-Stage, Variable-Speed ECM
  • Multi-Position, Ultra-Low NOx

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GRVT80/GDVT80

  • 80% AFUE Performance
  • Integrated communicating ComfortBridge™ technology
  • Two Stage, Variable Speed ECM motor

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GR9S80/GD9S80

  • 80% AFUE Performance
  • Durable Hot-surface igniter
  • Single-Stage, Multi-Speed ECM motor

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