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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%.

Our current product offering starts at 80% AFUE and goes all the way to a very efficient 96.6% AFUE rating. Depending on your average usage, higher AFUE rated furnaces can significantly reduce your gas bill.

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.

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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Gas Furnace Product Offering
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Product NameEvolution® System Plus 98MTM Gas FurnaceEvolutionTM Plus 80 Variable Speed Gas Furnace Preferred™ 80 Series 314AAV Gas FurnacePreferred Plus 80x Gas FurnaceLegacyTM Series 80% Gas Furnace
Model Family987M315AAV314AAV313A310AAV
Annual Fuel Utilization EfficiencyUp to 98.3% AFUEUp to 80% AFUE80%80% AFUE Plus 80x80% AFUE
Energy Star RatedEnergy Star RatedNoNoNoNo
Blower MotorVariable-speed full-featured ECM Variable speed ECM Perfect™ ECM (PWM) Variable speedMulti-speed ECM Fixed speed
Gas ValveModulatingTwo-stageTwo-stageSingle-stage Single-stage
Fan Heating OperationModulatingTwo-stage operationTwo-stageSingle-stage Single-stage
Factory Warranty Parts10-year parts limited warranty upon registration10-year parts limited warranty when properly registered.10yr limited warranty10-year parts limited warranty when properly registered.10yr limited warranty
Heat Exchanger WarrantyLifetime limited warranty Limited lifetime20yr limited warrantyLimited 20-year20yr limited warranty
Sound LevelQuieTech™QuieTech™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
  • Quiet performance and even-temperature comfort from variable-speed air delivery
  • Perfect Heat™ technology closely manages your comfort by adjusting system operation to changing conditions
  • Perfect Humidity™ technology ensures optimal summertime cooling dehumidification when system components include multi- and va
  • Fan On Plus™ technology lets you choose the speed of continuous fan operation with a compatible control
  • Insulated cabinet for quieter operation
  • Perfect Heat™ operation
  • Reduced operating sound through low-stage operation and sound elimination combustion system
  • Increased SEER ratings for AC and HP systems
  • Matches CFM to cooling system at all static points
  • Shorter in height-only 33 1/3
  • Microprocessor based
  • Adapts heating stages to meet demand
  • Continuous Fan speed adjustable from thermostat
  • Adjustable heating air temperature rise
  • Up to 12 cooling airflow selections with a wide range of capability
  • LED diagnostics, non-volatile status code memory, and self test feature
  • Patented blocked vent safeguard to ensure proper furnace venting
  • Insulated blower compartment
  • Heat pump compatible
  • All models are Chimney Friendly when used with accessory vent kit
  • Hot Surface Ignition (HSI)
  • Thirteen ways to vent
  • ECM Blower Motor included
  • Noise elimination combustion system
  • SmartEvap™ can lower the humidity level in the home by nearly 10%
  • Four-position furnaces: Upflow, Horizontal Right, Horizontal Left, Downflow Thirteen different vent options
  • Compact design only 33-1/3 in. tall
  • Microprocessor based
  • Patented blocked vent safeguard to ensure proper furnace venting
  • Insulatd blower compartment
  • HYBRID HEAT® Dual Fuel System compatible
  • Perfect™ Light Igniter
  • Thirteen different vent options
  • Heat pump compatible
  • All models are Chimney Friendly when used with accessory vent kit
  • Hot Surface Ignition (HSI)
  • Pilot-freePerfectLight™ ignition
  • Insulated cabinet for quieter operation
  • Hybrid Heat® system capable
  • Filter cabinet