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Gas Furnaces

Today's new high efficiency furnaces can save up to 50% in operating costs over a ten-year-old furnace. Many 1990 and earlier model furnaces have Annual Fuel Utilization Efficiency (AFUE) ratings of 65% or less. The minimum AFUE rated furnace that can be sold in the United States today is 80% for the Southeast and Southwest, with 90% being the minimum in the North.

Our current product offering starts at 80% AFUE and goes all the way to a very efficient 98%+ AFUE rating. Depending on your average usage, higher AFUE rated furnaces can significantly reduce your gas bill.

The DOE’s regional breakdown by state is as follows:

  • North – 80% AFUE
  • Southeast – 90% AFUE
  • Southwest - 90% AFUE
DOE Regional SEER Breakdown Map

Let Foust Furnace & Air Conditioning Help Pick The Right Furnace For Your Home

We offer many furnaces with variable and multi-speed features that can provide enhanced indoor comfort by slowly ramping up to your thermostat setting rather than simply turning on at full speed. This alleviates the "cold air blow" often associated with single speed furnaces, and dramatically reduces system noise. Call us now at (989) 944-1527.

Gas Furnace Product Offering

AMVM97

High-Efficiency Modulating Variable Speed Gas Furnace

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Model Family: AMVM97
Annual Fuel Utilization Efficiency: Up to 98% AFUE
Energy Star Rated: ENERGY STAR®
Blower Motor: Quiet variable-speed induced draft blower
Gas Valve: Self-calibrating modulating gas valve auto-configure for each installation
Inducer Draft Motor: Quiet, Variable-Speed, Induced-Draft Blower
Fan Heating Operation: Variable Speed
Factory Warranty Parts: 10-Year Parts Limited Warranty
Heat Exchanger Warranty: Lifetime Unit Replacement Limited Warranty
Sound Level: Quiet performance
Manufacturer's Stated Benefits:
  • ComfortNet™ Communicating System compatible
  • Heavy-duty stainless-steel tubular heat exchanger
  • Stainless-steel secondary heat exchanger
  • Durable Silicon Nitride igniter
  • Uses ComfortNet™ communicating, two-stage or single-stage thermostats
  • Self-diagnostic control board with constant memory fault code history output to a dual 7-segment display
  • Color-coded low-voltage terminals with provisions for electronic air cleaner and humidifier
  • Efficient and quiet variable-speed airflow system gently ramps up or down according to heating or cooling demand
  • Multiple continuous fan speed options offer quiet air circulation
  • Auto-Comfort and enhanced dehumidification modes available
  • Cabinet air leakage (QLeak) = <2%
  • All models comply with California 40 ng/J Low NOx emissions standards
AMVC96

Two-Stage Variable-Speed Gas Furnace

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Model Family: AMVC96
Annual Fuel Utilization Efficiency: Up to 96% AFUE
Energy Star Rated: ENERGY STAR®
Blower Motor: Quiet two-speed induced draft blower
Gas Valve: Two-stage gas valve provides quiet, economical heating
Inducer Draft Motor: Quiet, Two-Stage, Induced-Draft Blower
Fan Heating Operation: Two Speed
Factory Warranty Parts: 10-Year Parts Limited Warranty
Heat Exchanger Warranty: Lifetime Unit Replacement Limited Warranty
Sound Level: Quiet performance
Manufacturer's Stated Benefits:
  • Heavy-duty stainless-steel tubular heat exchanger
  • Stainless-steel secondary heat exchanger
  • ComfortNet Communications System compatible
  • Durable Silicon Nitride igniter
  • Uses ComfortNet™ communicating, two-stage or single-stage thermostats
  • Self-diagnostic control board with constant memory fault code history output to a dual 7-segment display
  • Color-coded low-voltage terminals with provisions for electronic air cleaner and humidifier
  • Efficient and quiet variable-speed airflow system gently ramps up or down according to heating or cooling demand
  • Multiple continuous fan speed options offer quiet air circulation
  • Cabinet air leakage (QLeak) = <2%
  • Auto-Comfort and enhanced dehumidification modes available
  • All models comply with California 40 ng/J Low NOx emissions standards
AM9S92

Single-Stage Multi-Speed Gas Furnace

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Model Family: AM9S92
Annual Fuel Utilization Efficiency: Up to 92% AFUE
Energy Star Rated: No
Blower Motor: Multi-speed ECM blower motor
Gas Valve: Single-stage gas valve
Inducer Draft Motor: Quiet single-speed induced draft blower
Fan Heating Operation: Single Speed
Factory Warranty Parts: 10-Year Parts Limited Warranty
Heat Exchanger Warranty: Lifetime Heat Exchanger Limited Warranty
Sound Level: Quiet Operation
Manufacturer's Stated Benefits:
  • Stainless-steel secondary heat exchanger
AMVC80

Two-Stage, Variable-Speed ECM Gas Furnace 80% AFUE

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Model Family: AMVC80
Annual Fuel Utilization Efficiency: 80 AFUE
Energy Star Rated: No
Blower Motor: Two-Stage, Variable-Speed ECM
Gas Valve: Two-stage
Inducer Draft Motor: Quiet, Two-speed Induced Draft Blower
Fan Heating Operation: two-speed induced draft blower
Factory Warranty Parts: 10 year limited warranty
Heat Exchanger Warranty: Lifetime Unit Replacement Limited Warranty
Sound Level: Quiet Operation
Manufacturer's Stated Benefits:
  • Integrated communicating ComfortBridge™ technology
  • Commissioning and diagnostics via on board Bluetooth with the CoolCloud™ phone and tablet application
  • Self-diagnostic control board with constant memory fault code history output to a triple 7-segment display
  • Fully insulated, heavy-gauge steel cabinet with durable baked-enamel finish
  • SureStart® Silicon Nitride igniter designed for long igniter life
  • 2-Year Unit Replacement Limited Warranty