Quiet Operation

• The most efficient and quietest furnace you can buy1!
• SilentComfort™ technology—delivers the ultimate in quiet, consistent heating—up to seven times quieter than competitive models1
• Variable speed blower motor—provides a quiet, consistent flow of air for enhanced comfort, efficiency and humidity control
• Fully insulated cabinet—patented noise-reducing construction further minimizes operating sound to an industry-leading low level

Home Comfort

• Precise Comfort™ technology—automatically adjusts fan speed, heat and airflow capacity in increments as small as 1% for the ultimate in temperature control
• AirFlex™ technology—offers custom settings which can be selected to meet each home's specific year-round comfort requirements
• Zoning-compatible design—works with Lennox' Harmony III™ zoning system to deliver the right amount of comfort for up to four zones
• Variable-capacity operation—goes beyond typical low and high two-stage operation, varying output from 35% to 100%

Energy Efficiency

• The most efficient and quietest furnace you can buy1!
• Efficiency rating of up to 98.2% AFUE —can save you over $800 dollars each year*, compared to standard furnaces
• ENERGY STAR® qualified—meets or exceeds EPA guidelines for energy efficiency
• This product has been designated as one of the Most Efficient ENERGY STAR qualified products in 2011. Products that are recognized as the Most Efficient of ENERGY STAR in 2011 prevent greenhouse gas emissions by meeting rigorous energy efficiency performance levels set by the U.S. Environmental Protection Agency.
• Self-calibrating variable speed inducer—automatically adjusts to match the system requirements, ensuring cleaner combustion and efficient operation
• Stainless Steel secondary heat exchanger—has a robust, time-tested design that captures waste heat, allowing the furnace to achieve industry-leading efficiency levels
• Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between electric and gas heat, optimizing energy use and minimizing heating costs
• icomfort™-enabled technology—allows the furnace, when installed with the easy-to-use programmable icomfort Touch® thermostat, to exchange information and make adjustments as needed to optimize performance and efficiency**

Reliable Performance

• 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. Direct-readout diagnostics for simple, quick troubleshooting
• Limited Lifetime Warranty on heat exchanger
• 10-Year Limited Warranty on covered components

Quiet Operation

• The quietest furnace in its class2—up to 4-1/2 times quieter than competitive models
• SilentComfort™ technology—delivers the ultimate in quiet, consistent heating
• Special sound-absorbing materials—further reduce sound for even quieter operation

Home Comfort

• Two-stage operation—provides more even temperatures in your home
• Variable speed technology—delivers greater humidity control and consistent airflow for improved comfort and indoor air quality
• Ultra-low continuous fan speed—provides a quiet, constant flow of air and optimizes indoor air quality accessories

Energy Efficiency

• 80% AFUE heating efficiency—rating can save you hundreds of dollars each year, compared to older furnaces
• Improved cooling efficiency—achieved by matching with a Lennox air conditioner or heat pump, the SL280V will improve the system's SEER**
• Dual-fuel capability—can be combined with an electric heat pump to create a dual-fuel system. This combination minimizes heating costs by seamlessly alternating between the two energy sources, depending on outdoor conditions.
• icomfort™-enabled technology—allows the furnace, when installed with the easy-to-use programmable icomfort Touch® thermostat, to exchange information and make adjustments as needed to optimize performance and efficiency***
• Sealed blower compartment—minimizes losses and maximizes efficiency and comfort

Reliable Performance

• Duralok® heat exchanger—made of patented ArmourTuf™ steel. Life-tested in excess of agency requirements for long product life and durability
• SureLight® igniter—silicone nitride construction ensures long product life and reliable operation
• SureLight control board—controls furnace operation to ensure high reliability and efficiency
• Durable steel cabinet—sleekly styled and made to last with a contoured design and high-quality paint finish
• 20-year limited warranty on heat exchanger
• 10-year limited warranty on covered components

Quiet Operation

• Fully insulated cabinet—ensures quiet, efficient operation

Home Comfort

• Two-stage, variable speed operation—runs at low speed 80% of the time, which minimizes the up-and-down temperature changes associated with standard furnaces
• 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

Energy Efficiency

• Efficiency rating of up to 95% AFUE—can save you hundreds of dollars each year*, compared to standard furnaces
• ENERGY STAR® qualified—meets or exceeds EPA guidelines for energy efficiency
• Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between electric and gas heat, optimizing energy use and minimizing heating costs

Reliable Performance

• 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
• Multi-position models available
• Limited Lifetime Warranty on heat exchanger
• 5-Year Limited Warranty on covered components
• This product may be eligible for valuable 10-Year Limited Extended Warranty coverage. Click here for details.

Quiet Operation

• Fully insulated cabinet—ensures quiet, efficient operation
• Two-stage heating with continuous fan operation—quieter than standard single-stage furnaces

Home Comfort

• Two-stage operation—runs at low speed 80% of the time, which minimizes the up-and-down temperature changes associated with standard furnaces
• 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

Energy Efficiency

• Efficiency rating of up to 95% AFUE—can save you hundreds of dollars each year*, compared to standard furnaces
• Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between electric and gas heat, optimizing energy use and minimizing heating costs

Reliable Performance

• 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
• Multi-position models available
• Lifetime Limited Warranty on heat exchanger
• 5-Year Limited Warranty on covered components
• This product may be eligible for valuable 10-Year Limited Extended Warranty coverage.

Quiet Operation

• Fully insulated cabinet—ensures quiet, efficient operation
• Secondary heat exchanger—allows the furnace to achieve high efficiency levels by capturing additional heat

Home Comfort

• 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

Energy Efficiency

• Efficiency rating of 95% AFUE— can save you hundreds of dollars each year*, compared to standard furnaces
• Power Saver™ motor operates at constant torque to help maintain consistent air flow.
• Power Saver technology not only provides energy boost capabilities improving the overall system efficiency, similar to a variable speed furnace, but also delivers higher SEER ratings in cooling mode. In continuous fan mode, this technology helps keep energy waste at a minimum.
• Sealed blower compartment—minimizes losses and maximizes efficiency and comfort. Less than 1% leakage at 1.0" ESP
• Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between electric and gas heat, optimizing energy use and minimizing heating costs.

Reliable Performance

• 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
• Lifetime Limited Warranty on heat exchanger
• 5-Year Limited Warranty on covered components
• This product may be eligible for valuable 10-Year Limited Extended Warranty coverage.

Quiet Operation

• Fully insulated cabinet— ensures quiet, efficient operation
• Secondary heat exchanger— allows the furnace to achieve high efficiency levels by capturing additional heat

Home Comfort

• 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

Energy Efficiency

• Efficiency rating of 95% AFUE— can save you hundreds of dollars each year*, compared to standard furnaces
• Sealed blower compartment—minimizes losses and maximizes efficiency and comfort. Less than 1% leakage at 1.0" ESP
• Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between electric and gas heat, optimizing energy use and minimizing heating costs.

Reliable Performance

• 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
• Lifetime Limited Warranty on heat exchanger
• 5-Year Limited Warranty on covered components
• This product may be eligible for valuable 10-Year Limited Extended Warranty coverage.

Quiet Operation

• Fully insulated cabinet—ensures quiet, efficient operation

Home Comfort

• Two-stage operation—runs at low speed 80% of the time, which minimizes the up-and-down temperature changes associated with standard furnaces

Energy Efficiency

• Efficiency rating of 80% AFUE—can save you hundreds of dollars each year*, compared to standard furnaces
• Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between electric and gas heat, optimizing energy use and minimizing heating costs

Reliable Performance

• 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
• 20-Year Limited Warranty on heat exchanger
• 5-Year Limited Warranty on covered components
• This product may be eligible for valuable 10-Year Limited Extended Warranty coverage.

Quiet Operation

• Fully insulated cabinet—ensures quiet, efficient operation

Home Comfort

• Low-speed fan—provides a consistent, continuous flow of warm air

Energy Efficiency

• Efficiency rating of 80% AFUE—can save you hundreds of dollars each year*, compared to standard furnaces
• Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between electric and gas heat, optimizing energy use and minimizing heating costs

Reliable Performance

• 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
• 20-Year Limited Warranty on heat exchanger
• 5-Year Limited Warranty on covered components
• This product may be eligible for valuable 10-Year Limited Extended Warranty coverage.

Home Comfort

• Stainless steel secondary heat exchanger—allows the furnace to reach high efficiency levels by capturing additional heat
• Robust blower assembly—exceeds industry standard airflow for even temperatures and improved comfort

Energy Efficiency

• Efficiency rating of 95% AFUE—can save you hundreds of dollars each year, compared to standard furnaces
• Sealed blower compartment—minimizes losses and maximizes efficiency and comfort. Less than 1% leakage at 1.0" ESP
• Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between electric and gas heat, optimizing energy use and minimizing heating costs

Reliable Performance

• Duralok Plus® heat exchanger—made of patented ArmorTufâ„¢ aluminized steel to ensure high reliability and efficiency
• SureLight® ignitor—silicon nitride construction for long product life and reliable operation
• Durable steel cabinet—Made to last, with a resilient and attractive textured-paint finish
• SureLight integrated control board—ensures full control of furnace operation
• 20-Year Limited Warranty on heat exchanger
• 5-Year Limited Warranty on covered components
• This product may be eligible for valuable 10-Year Limited Extended Warranty coverage

Home Comfort

• Stainless steel secondary heat exchanger—allows the furnace to reach high efficiency levels by capturing additional heat
• Robust blower assembly—exceeds industry standard airflow for even temperatures and improved comfort

Energy Efficiency

• Efficiency rating of 93% AFUE—can save you hundreds of dollars each year, compared to standard furnaces
• Sealed blower compartment—minimizes losses and maximizes efficiency and comfort. Less than 1% leakage at 1.0" ESP
• Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between electric and gas heat, optimizing energy use and minimizing heating costs

Reliable Performance

• Duralok Plus® heat exchanger—made of patented ArmorTuf™ aluminized steel to ensure high reliability and efficiency
• SureLight® ignitor—silicon nitride construction for long product life and reliable operation
• Durable steel cabinet—Made to last, with a resilient and attractive textured-paint finish
• SureLight integrated control board—ensures full control of furnace operation
• 20-Year Limited Warranty on heat exchanger
• 5-Year Limited Warranty on covered components
• This product may be eligible for valuable 10-Year Limited Extended Warranty coverage.

Energy Efficiency

• Efficiency rating of 80% AFUE—can save you hundreds of dollars each year, compared to older furnaces
• Power Saver™ motor operates at constant torque to help maintain consistent air flow.
• Power Saver technology not only provides energy boost capabilities improving the overall system efficiency, similar to a variable speed furnace, but also delivers higher SEER ratings in cooling mode. In continuous fan mode, this technology helps keep energy waste at a minimum.
• Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between electric and gas heat, optimizing energy use and minimizing heating costs

Reliable Performance

• Duralok Plus™ heat exchanger—made of high-quality, patented ArmourTuf aluminized steel
• Hot surface igniter—controls furnace operation to ensure reliable, efficient performance
• 20-Year Limited Warranty on heat exchanger
• 5-Year Limited Warranty on covered components
• This product may be eligible for valuable 10-Year Limited Extended Warranty coverage.

Energy Efficiency

• Efficiency rating of 80% AFUE—can save you hundreds of dollars each year, compared to older furnaces
• Dual-fuel capability—can be combined with an electric heat pump to enhance comfort and fuel efficiency by alternating between electric and gas heat, optimizing energy use and minimizing heating costs

Reliable Performance

• Duralok Plus™ heat exchanger—made of high-quality, patented ArmourTuf aluminized steel
• Hot surface igniter—controls furnace operation to ensure reliable, efficient performance
• 20-Year Limited Warranty on heat exchanger
• 5-Year Limited Warranty on covered components
• This product may be eligible for valuable 10-Year Limited Extended Warranty coverage.