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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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Product NameDave Lennox Signature® Collection SLP98V Variable-Capacity Gas FurnaceElite® Series EL296V High-Efficiency, Two-Stage Gas FurnaceElite® Series EL195E Gas FurnaceMerit® Series ML180 Gas Furnace
Model FamilySLP98VEL296VEL195EML180
Annual Fuel Utilization Efficiencyup to 98.7% AFUE 96% AFUE95% AFUE80% AFUE
Energy Star RatedENERGY STAR®ENERGY STAR®ENERGY STAR® No
Blower MotorVariable speed blower motorVariable speedPower Saver™ motor
Gas Valvetwo-stage operationTwo-stageSingle-StageSingle-Stage
Fan Heating Operationtwo-stage operationTwo-stageSingle-StageSingle-Stage
Factory Warranty Parts10-Year Limited Warranty on covered components5-Year Limited Warranty on covered components5-Year Limited Warranty on covered components5-Year Limited Warranty on covered components
Heat Exchanger WarrantyLimited Lifetime Warranty on heat exchangerLimited Lifetime Warranty on heat exchangerLifetime Limited Warranty on heat exchanger20-Year Limited Warranty on heat exchanger
Sound LevelQuiet operationQuiet operationQuiet operationQuiet operation
Manufacturer's Stated Benefits
  • Stainless Steel secondary heat exchanger—has a robust, time-tested design that captures waste heat, allowing the furnace to ac
  • Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between
  • iComfort®-enabled technology—allows the furnace, when installed with the easy-to-use programmable iComfort Wi-Fi® thermostat
  • SilentComfort™ technology combines advanced engineering with sound-absorbing materials to deliver the ultimate in quiet perfor
  • Fully insulated cabinet—patented noise-reducing construction further minimizes operating sound to an industry-leading low leve
  • Precise Comfort® technology—automatically adjusts fan speed, heat and airflow capacity in increments as small as 1% for the u
  • AirFlex™ technology—offers custom settings which can be selected to meet each home's specific year-round comfort requirement
  • Zoning-compatible design—works with Lennox' iHarmony® zoning system to deliver the right amount of comfort for up to four zon
  • Variable-capacity operation—goes beyond typical low and high two-stage operation, varying output from 35% to 100%
  • Duralok Plus™ heat exchanger—made of patented ArmorTuf™ steel to ensure high reliability and efficiency
  • SureLight® igniter—silicone nitride construction ensures long product life and reliable operation
  • SureLight control board (icomfort™ compatiable)—controls all furnace operations to ensure high reliability and efficiency. D
  • Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between
  • Robust stainless steel secondary heat exchanger—allows the furnace to achieve high efficiency levels by capturing additional h
  • iComfort®-enabled technology—allows the furnace, when installed with the easy-to-use programmable iComfort Wi-Fi® thermostat
  • SilentComfort™ Technology—delivers the ultimate in quiet, consistent heating
  • Special sound-absorbing insulation—further reduces sound for quiet operation
  • Durable steel cabinet—made to last with an attractive, high-qulaity textured paint finish
  • Enhanced humidity control—runs at different speeds to precisely control the flow of heated and cooled air throughout your home
  • Secondary heat exchanger—allows the furnace to achieve high efficiency levels by capturing additional heat
  • Low-speed fan—provides a consistent, continuous flow of warm air
  • Duralok Plus™ heat exchanger—made of patented ArmorTuf™ steel to ensure high reliability and efficiency
  • SureLight® igniter—silicone nitride construction ensures long product life and reliable operation
  • SureLight control board—controls furnace operation to ensure high reliability and efficiency
  • Multi-position models available
  • Power Saver technology not only provides energy boost capabilities improving the overall system efficiency, similar to a variabl
  • Sealed blower compartment—minimizes losses and maximizes efficiency and comfort. Less than 1% leakage at 1.0
  • Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between
  • Fully insulated cabinet—ensures quiet, efficient operation
  • Secondary heat exchanger—allows the furnace to achieve high efficiency levels by capturing additional heat
  • Low-speed fan—provides a consistent, continuous flow of warm air
  • Secondary heat exchanger—allows the furnace to achieve high efficiency levels by capturing additional heat
  • Duralok Plus™ heat exchanger—made of patented ArmorTuf™ steel to ensure high reliability and efficiency
  • SureLight® igniter—silicone nitride construction ensures long product life and reliable operation
  • SureLight control board—direct-readout diagnostics allow simple, quick troubleshooting
  • Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between
  • Duralok Plus™ heat exchanger—made of high-quality, patented ArmourTuf aluminized steel
  • Hot surface igniter—controls furnace operation to ensure reliable, efficient performance

Carrier Gas Furnaces

Feature Comparison
Carrier Gas Furnaces
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Carrier Gas Furnaces
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Carrier Gas Furnaces
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Carrier Gas Furnaces
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Product NameInfinity® 98 Gas Furnace With Greenspeed™ IntelligenceInfinity® 96 Gas Furnace Performance™ 90 Gas FurnaceComfort™ 80 GasFurnace
Model Family59MN759TN659SP258STA
Annual Fuel Utilization EfficiencyUp to 98.5% AFUEUp to 96.7% AFUEUp to 92.1% AFUE80.0% AFUE
Energy Star RatedENERGY STAR®ENERGY STAR®ENERGY STAR®No
Blower MotorVariable-speed, ECM blower motorVariable-speed, ECM blower motorMulti-speed, ECM blower motorFixed-speed, PSC blower motor
Gas ValvePatented gas valve modulates in 1% increments between 40-100%Two-stagesSingle-stageSingle-stage
Fan Heating OperationVariable-speed / modulatesTwo-stagesFixed-speedFixed-speed
Factory Warranty Parts10 year parts limited warranty10yr limited warranty10 yr limited warranty10-year parts limited warranty
Heat Exchanger WarrantyLimited Lifetime WarrantyLifetime limited warrantyLifetime limited warranty20-year heat exchanger limited warranty
Sound Level QuieTech™ QuieTech™QuieTech™QuieTech™
Manufacturer's Stated Benefits
  • Greenspeed™ Intelligence
  • Highest degree of electrical efficiency among Carrier furnaces
  • Load matching performance delivers just the amount of heat needed for longer, quieter run times while minimizing energy use.
  • The quietest furnace you can buy (060V17-14 model/size)
  • The most efficient furnace you can buy (060V21-20 model/size)
  • Best temperature control management among Carrier® furnaces
  • HybridHeat® compatible with this model.
  • Exceptional year-round humidity management when installed as part of complete Infinity system with added humidifier
  • In zoned systems improves airflow control for greater comfort in your home.
  • SmartEvap™ techology
  • Pilot-free, hot surface PowerHeat™ ignition
  • Stainless steel fin-and-tube design secondary heat exchanger
  • Sound reduction: fully insulated cabinet and QuieTech™ noise reduction
  • Infinity level advanced diagnostic intelligence
  • Ideal Humidity System® technology capable to aid heat pump or air conditioner summer dehumidification 
  • SmartEvap™ technology works in concert with your cooling system to aid summer dehumidification
  • ComfortFan™ technology allows fan-speed choices in
  • Comfort Heat Technology® feature intelligently stages heating cycles to reduce temperature swings and improve efficiency
  • Infinity intelligence enables self-configuration and easy troubleshooting with Infinity control
  • Fully insulated cabinet
  • Advanced temperature control
  • Includes air filter cabinet
  • Allows 4 choices of
  • Hybrid Heat® compatible
  • Aluminized steel clamshell-style primary heat exchanger
  • Stainless steel fin-and-tube design secondary heat exchanger
  • Allows choices of
  • Hybrid Heat® compatible
  • Year-round humidity management when installed as part of complete Performance system with humidifier
  • Can help boost cooling SEER efficiency when matched with appropriate cooling system components
  • Pilot-free, hot surface PowerHeat™ ignition
  • Aluminized steel clamshell-style primary heat exchanger
  • Stainless steel fin-and-tube design secondary heat exchanger
  • Sound reduction: fully insulated cabinet and QuieTech™ noise reduction
  • Recommended controls: Performance™ Edge® relative humidity or ComfortZone™ II thermostats
  • All units meet California Air Quality Management District emission requirements, are design certified in Canada, and are certifi
  • Hybrid Heat® compatible with this model.
  • Pilot-free, hot surface PowerHeat™ ignition
  • Aluminized steel clamshell-style primary heat exchanger
  • Sound reduction: fully insulated cabinet and QuieTech™ noise reduction
  • Recommended controls: Performance™ Edge® relative humidity or ComfortZoneTM II thermostats