G97CMN – 98% AFUE, Variable-Speed ACiQ Gas Furnace

Enjoy ultimate comfort even in the coldest weather with our highest efficiency gas furnace product. It features modulating gas heat performance that delivers incredible temperature control and quiet performance. The variable-speed blower also means you’ll enjoy better summer dehumidification and a possible SEER boost as your furnace works with your cooling unit to help pull moisture out of the air.

Product Details

Efficiency Rating

Up to 98% AFUE rating

Heat Exchanger Warranty

Lifetime Heat Exchanger Limited Warranty - Registration Required


10-Year Replacement Limited Warranty - Registration Required

Parts Warranty

10-Year Parts Limited Warranty - Registration Required

Energy Star® Qualified

U.S. EPA certified helps protect climate through energy efficiency

Blower Motor

Variable-speed blower motor and two-stage gas valve provide improved distribution of temperature control and comfort

Heating capacity

60,000–120,000 BTUh


Modulating Gas Valve Operation

Benefits & Features

  • Variable-speed blower motor and two-stage gas valve provide improved distribution of temperature control and comfort
  • Dual fuel capable with a compatible heat pump and thermostat for energy-saving heating performance
  • As a modulating furnace, it operates at lower stages most of the time to save energy, smoothly ramping up the heat as temperatures drop
  • Fully insulated cabinet keeps the heat moving
  • Compatible with Air purifiers and Humidifiers
  • Wi-Fi® enabled remote access
  • 10-Year Limited Replacement Warranty *Registration Required
  • 10-Year Parts Limited Warranty *Registration Required
  • Lifetime Heat Exchanger Limited Warranty *Registration Required


  • High efficiency variable-speed, constant airflow ECM blower motor
  • Variable-speed induced draft combustion motor
  • Modulating gas valve with range of 40%–100% capacity
  • RPJ® (Rigid Press Joint) primary heat exchanger, stainless steel secondary heat exchanger
  • Reliable direct ignition with Silicone Nitride igniter
  • High temperature limit control prevents overheating
  • Solid, pre-painted steel insulated cabinet with tight fit door latch system
  • Sound-reducing features: soft mounted blower and inducer motor 
  • Compatible thermostat: Ion™ System Control for full function and efficiency capability, Wi-Fi® remote access convenience and intelligent diagnostics 
  • Heating capacity: 60,000–120,000 BTUh