Lennox Air Conditioners

SL25KCV

(Replaces the SL28XCV)

Ultra-Efficient Variable-Capacity Air Conditioner w/ 2025 Compliant Environmentally Friendly R-454B Refrigerant

Feature Summary

Ultra-Precise Variable-Capacity Operation
Efficiency rating of up to 26 SEER2
ENERGY STAR® Certified
Latest 2025 EPA/MOE Compliant R-454B Refrigerant
Ultra-Quiet Operation (As low as 58dB)
10 Years Parts Warranty
10 Years Labour Warranty

The most precise and efficient air conditioner available.: Offering the highest level of performance on the market, the Dave Lennox Signature® Collection SL25KCV air conditioner delivers the ultimate in consistently perfect air for your home. No other air conditioner comes close to its 26.00 SEER2 level of efficiency. From its innovative cabinet design that increases durability, to its digital communication features that maximize accurate control, it is without question the most precise and efficient air conditioner you can buy.
The perfect amount of quiet: To reduce operating sound levels, the SL25KCV uses a sound-dampening system with a precision-balanced, direct-drive fan to ensure smooth, quiet operation. This lets it operate at a volume as quiet as 58 dB, or the sound of a microwave.
Digitally intelligent for accuracy and efficiency: This truly digital product is designed to pair with the Lennox S40 Smart Thermostat as part of a fully communicating home comfort system. Sensors in the equipment allow the thermostat to diagnose issues and automatically make system adjustments to more accurately and efficiently maintain temperature, humidity and air quality.even responds to the outdoor environment to adjust operation to account for factors like pollen and outdoor air quality.
Cabinets designed for reliability and serviceability: Our most innovative cabinet design features panels that fit securely to the unit to prevent excess noise, along with an easily removable louver panel that allows for quick access by your technician. This proprietary design makes Lennox units more attractive and durable, quieter and easier to install and service, so nothing stands between you and having perfect air in your home.
A refrigerant that’s better for the environment.: This product is compliant with 2025 EPA regulations for lower global warming potential (GWP) refrigerants. The Lennox choice of 2025 Compliant Refrigerant has a lower GWP than its predecessor and is formulated to provide excellent, reliable performance of your system for years to come.

SL28XCV

(Being replaced by the SL25KCV)

Precise, highest-efficiency, fully digital, variable-capacity air conditioner

Feature Summary

Ultra-Precise Variable-Capacity Operation
Efficiency rating of up to 28 SEER (26 SEER2)
ENERGY STAR® Certified
Utilizes current R-410B Refrigerant
Ultra-Quiet Operation (As low as 59dB)
10 Years Parts Warranty
10 Years Labour Warranty

The Ultimate Side of Perfect Air: Not only is the SL28XCV air conditioner part of the Dave Lennox Signature® Collection, it’s part of the Ultimate Comfort System™, which combines the best of everything Lennox has to offer to create an unprecedented whole-home comfort system that seamlessly and intelligently works together to stay finely tuned to your home and deliver consistently clean, perfect air.
Consistently Perfect: Precise Comfort® technology adjusts cooling output in precise and minute increments to perfectly match your energy use with your comfort.
Beyond Quiet: This air conditioner has been engineered with a variable-capacity compressor which allows it to primarily run in low speed—drastically minimizing the sound of air kicking on or off inside the home. Add in a special sound-dampening system to absorb outdoor noise and you can be assured it operates at a noise level that is, quite simply, unheard of.
Our Uncontested Quantum™ Coil: With years of rigorous testing under the most extreme conditions, our Quantum Coil–featuring a proprietary aluminum alloy exclusive to Lennox–is designed to weather the harshest elements.
Smarter Together: With the help of the iComfort® S40 ultra smart thermostat, the SL28XCV air conditioner unlocks a world of connectivity. It stays finely tuned to your home by using sensors to react, diagnose, and troubleshoot—all while remaining in constant contact with your dealer to ensure proactive responses. Geofencing technology ensures your air turns on and off as you come and go. And the system even responds to the outdoor environment to adjust operation to account for factors like pollen and outdoor air quality.

EL22KCV

(Replaces EL23XCV & EL18XCV)

High-Efficiency, Digital-Ready, Variable-Capacity, Air Conditioner w/ 2025 Compliant Environmentally Friendly R-454B Refrigerant

Feature Summary

Precise Variable-Capacity Operation
Efficiency rating of up to 22 SEER2
ENERGY STAR® Certified
Latest 2025 EPA/MOE Compliant R-454B Refrigerant
Ultra-Quiet Operation (As low as 60dB)
10 Years Parts Warranty
10 Years Labour Warranty

Digital ready for class-leading efficiency: When paired with digital equipment, the EL22KCV maximizes its efficiency with modern communication features to allow for more precise control of temperature and humidity. With an innovative cabinet design that increases durability, this 2025 Compliant Refrigerant air conditioner offers class-leading comfort, quiet and energy savings for your home.
A peacefully quiet environment: To reduce operating sound levels, the EL22KCV uses a sound-dampening system with a precision-balanced, proprietary direct-drive fan to ensure smooth, quiet operation. This lets it operate at a volume as quiet as 60 dB, or the sound of a microwave.
Use Less Energy. Save More Money: With efficiencies of up to 22.00 SEER2, the EL22KCV can deliver significant energy savings. In fact, it can help cut your energy bills and may even help you qualify for energy rebates.
ENERGY STAR® Certified: Heating, ventilation and air-conditioning (HVAC) equipment with the ENERGY STAR label meets or exceeds federal guidelines for energy-efficient performance. An ENERGY STAR-certified furnace can reduce heating costs by 15 percent.
Cabinets designed for reliability and serviceability: Our most innovative cabinet design features panels that fit securely to the unit to prevent excess noise, along with an easily removable louver panel that allows for quick access by your technician. This proprietary design makes Lennox units more attractive and durable, quieter and easier to install and service, so nothing stands between you and having perfect air in your home.
Variable capacity, constant efficiency: This product offers variable-capacity operation, meaning it can adjust cooling output like a dimmer switch to perfectly match your energy use to your comfort needs. This also helps control humidity more accurately.
A refrigerant that’s better for the environment.: This product is compliant with 2025 EPA regulations for lower global warming potential (GWP) refrigerants. The Lennox choice of 2025 Compliant Refrigerant has a lower GWP than its predecessor and is formulated to provide excellent, reliable performance of your system for years to come.

EL23XCV

(Being replaced by EL22KCV)

High-Efficiency, Digital-Ready, Variable-Capacity, Air Conditioner w/ Current R-410A Refrigerant

Feature Summary

Precise Variable-Capacity Operation
Efficiency rating of up to 22 SEER2
ENERGY STAR® Certified
Utilizes current R-410A Refrigerant
Ultra-Quiet Operation (As low as 59 dB)
10 Years Parts Warranty
10 Years Labour Warranty

Your Digital Bridge into a World of Perfect Air: The efficient EL23XCV variable-capacity air conditioner is your digital bridge into a world of perfect air. When paired with a digital furnace or air handler and a Lennox S30 or S40 Smart Thermostat, it can step into a fully communicating home comfort system, maximizing its 22.00 SEER2 efficiency with modern communication features.
A peacefully quiet environment: To reduce operating sound levels, the EL22KCV uses a sound-dampening system with a precision-balanced, proprietary direct-drive fan to ensure smooth, quiet operation. This lets it operate at a volume as quiet as 60 dB, or the sound of a microwave.
Use Less Energy. Save More Money: With efficiencies of up to 22.00 SEER2, the EL23XCV can deliver significant energy savings. In fact, it can help cut your energy bills and may even help you qualify for energy rebates.
ENERGY STAR® Certified: Heating, ventilation and air-conditioning (HVAC) equipment with the ENERGY STAR label meets or exceeds federal guidelines for energy-efficient performance. An ENERGY STAR-certified furnace can reduce heating costs by 15 percent.
Our Uncontested Quantum™ Coil: With years of rigorous testing under the most extreme conditions, our Quantum Coil – featuring a proprietary aluminum alloy exclusive to Lennox – is designed to weather the harshest elements.
Variable capacity, constant efficiency: This product offers variable-capacity operation, meaning it can adjust cooling output like a dimmer switch to perfectly match your energy use to your comfort needs. This also helps control humidity more accurately.

EL18XCV

(Being replaced by EL22KCV)

Truly variable. Truly digital.

Feature Summary

Precise Variable-Capacity Operation
Efficiency rating of up to 19 SEER2
ENERGY STAR® Certified
Utilizes current R-410A Refrigerant
Quiet Operation (As low as 72 dB)
10 Years Parts Warranty
10 Years Labour Warranty

Your Digital Bridge Into a World of Perfect Air: The Elite® Series model EL18XCV variable-speed air conditioner is your digital bridge into a world of perfect air. In fact, it’s the first variable-speed air conditioner of its kind. When paired with an iComfort®-enabled furnace or air handler and an iComfort® S30 thermostat, it maximizes its 18-SEER efficiency with modern communication features.
Precision Makes Perfect Comfort Possible: Perfect Air is maintained due to its ability to dynamically adapt to the temperature and humidity conditions of your home. And, when digitally enabled, this pro-active and responsive system provides remote diagnostics and troubleshooting that can notify you if it gets out of tune or needs maintenance.
Versatility That’s Always a Perfect Match: This compact, efficient, digital-ready unit featuring variable-speed technology can step up to a fully digital, iComfort® HVAC system at any time.
Use Less Energy. Save More Money.: Due to impressive efficiency levels, this air conditioner can deliver substantial energy savings. In fact, it can help cut your energy bills by several hundred dollars each year.
ENERGY STAR® Certified: Heating, ventilation and air-conditioning (HVAC) equipment with the ENERGY STAR label meets or exceeds federal guidelines for energy-efficient performance. An ENERGY STAR-certified furnace can reduce heating costs by 15 percent.
Our Uncontested Quantum™ Coil: With years of rigorous testing under the most extreme conditions, our Quantum™ Coil–featuring a proprietary aluminum alloy exclusive to Lennox– is designed to weather the harshest elements.
Variable capacity, constant efficiency: This product offers variable-capacity operation, meaning it can adjust cooling output like a dimmer switch to perfectly match your energy use to your comfort needs. This also helps control humidity more accurately.

EL16KC1

(Replaces EL17XC1)

Mid-efficiency, single-stage air conditioner w/ 2025 Compliant Environmentally Friendly R-454B Refrigerant

Feature Summary

Single Stage Operation
Efficiency rating of up to 17 SEER2
ENERGY STAR® Certified
Latest 2025 EPA/MOE Compliant R-454B Refrigerant
Quiet Operation (As low as 72dB)
10 Years Parts Warranty
10 Years Labour Warranty

The standard of operation: A single-stage unit is either on or off, working at full capacity when in use. With this simplified mode of operation, this product provides the heating and cooling levels you’d expect.
A peacefully quiet environment: To reduce operating sound levels, the EL16KC1 uses a sound-dampening system with a precision-balanced, direct-drive fan to ensure smooth, quiet operation. This lets it operate at a volume as quiet as 72 dB, or the sound of a handheld food mixer.
Use Less Energy. Save More Money: With efficiencies of up to 17.00 SEER2, the EL16KC1 can deliver significant energy savings. In fact, it can help cut your energy bills year-round.
ENERGY STAR® Certified: Heating, ventilation and air-conditioning (HVAC) equipment with the ENERGY STAR label meets or exceeds federal guidelines for energy-efficient performance. An ENERGY STAR-certified furnace can reduce heating costs by 15 percent.
Our Uncontested Quantum™ Coil: With years of rigorous testing under the most extreme conditions, our Quantum Coil – featuring a proprietary aluminum alloy exclusive to Lennox – is designed to weather the harshest elements.
A refrigerant that’s better for the environment.: This product is compliant with 2025 EPA regulations for lower global warming potential (GWP) refrigerants. The Lennox choice of 2025 Compliant Refrigerant has a lower GWP than its predecessor and is formulated to provide excellent, reliable performance of your system for years to come.

EL17XC1

(Being Replaced By EL16KC1)

Mid-efficiency, single-stage air conditioner w/ Current R-410A

Feature Summary

Single Stage Operation
Efficiency rating of up to 17 SEER2
ENERGY STAR® Certified
Latest 2025 EPA/MOE Compliant R-454B Refrigerant
Quiet Operation (As low as 72dB)
10 Years Parts Warranty
10 Years Labour Warranty

The standard of operation: A single-stage unit is either on or off, working at full capacity when in use. With this simplified mode of operation, this product provides the heating and cooling levels you’d expect.
A peacefully quiet environment: To reduce operating sound levels, the EL17XC1 uses a sound-dampening system with a precision-balanced, direct-drive fan to ensure smooth, quiet operation. This lets it operate at a volume as quiet as 72 dB, or the sound of a handheld food mixer.
Use Less Energy. Save More Money: With efficiencies of up to 18.60 SEER and 17.40 SEER2, the EL17XC1 can deliver significant energy savings. In fact, it can help cut your energy bills by several hundred dollars per year.
ENERGY STAR® Certified: Heating, ventilation and air-conditioning (HVAC) equipment with the ENERGY STAR label meets or exceeds federal guidelines for energy-efficient performance. An ENERGY STAR-certified furnace can reduce heating costs by 15 percent.
Our Uncontested Quantum™ Coil: With years of rigorous testing under the most extreme conditions, our Quantum Coil – featuring a proprietary aluminum alloy exclusive to Lennox – is designed to weather the harshest elements.

ML17KC2

(Replaces ML18XC2)

Mid-efficiency, two-stage air conditioner w/ 2025 Compliant Environmentally Friendly R-454B Refrigerant

Feature Summary

Two-Stage Operation
Efficiency rating of up to 17 SEER2
ENERGY STAR® Certified
Latest 2025 EPA/MOE Compliant R-454B Refrigerant
10 Years Parts Warranty
1 Year Labour Warranty

Balanced comfort and efficiency: While most air conditioners are single stage, meaning they're either on or off, this air conditioner can heat or cool at two different speeds. Most of the time the unit will meet cooling needs at its lower speed, resulting in balanced and consistent temperatures with lower energy use..
Efficient and Affordable: The ML17KC2 offers energy efficiencies of up to 17.00 SEER2, delivering comfort and energy savings at a more affordable price.
ENERGY STAR® Certified: Heating, ventilation and air-conditioning (HVAC) equipment with the ENERGY STAR label meets or exceeds federal guidelines for energy-efficient performance. An ENERGY STAR-certified furnace can reduce heating costs by 15 percent.
Our Uncontested Quantum™ Coil: With years of rigorous testing under the most extreme conditions, our Quantum Coil – featuring a proprietary aluminum alloy exclusive to Lennox – is designed to weather the harshest elements.
A refrigerant that’s better for the environment.: This product is compliant with 2025 EPA regulations for lower global warming potential (GWP) refrigerants. The Lennox choice of 2025 Compliant Refrigerant has a lower GWP than its predecessor and is formulated to provide excellent, reliable performance of your system for years to come.

ML18XC2

(Being Replaced By ML17KC2)

Mid-efficiency, two-stage air conditioner w/ Current R-410A Refrigerant

Feature Summary

Two-Stage Operation
Efficiency rating of up to 18 SEER2
ENERGY STAR® Certified
Current R-410A Refrigerant
10 Years Parts Warranty
1 Year Labour Warranty

Balanced comfort and efficiency: While most air conditioners are single stage, meaning they're either on or off, this air conditioner can heat or cool at two different speeds. Most of the time the unit will meet cooling needs at its lower speed, resulting in balanced and consistent temperatures with lower energy use..
Efficient and Affordable: The ML18XC2 offers energy efficiencies of up to 18.00 SEER and 17.8 SEER2, delivering comfort and energy savings at a more affordable price.
ENERGY STAR® Certified: Heating, ventilation and air-conditioning (HVAC) equipment with the ENERGY STAR label meets or exceeds federal guidelines for energy-efficient performance. An ENERGY STAR-certified furnace can reduce heating costs by 15 percent.
Our Uncontested Quantum™ Coil: With years of rigorous testing under the most extreme conditions, our Quantum Coil – featuring a proprietary aluminum alloy exclusive to Lennox – is designed to weather the harshest elements.

ML14KC1

(Replaces ML14XC1)

Standard-efficiency, single-stage air conditioner w/ 2025 Compliant Environmentally Friendly R-454B Refrigerant

Feature Summary

Single-Stage Operation
Efficiency rating of up to 14 SEER2
ENERGY STAR® Certified
Latest 2025 EPA/MOE Compliant R-454B Refrigerant
10 Years Parts Warranty
1 Year Labour Warranty

The standard of operation: A single-stage unit is either on or off, working at full capacity when in use. With this simplified mode of operation, this product provides the heating and cooling levels you’d expect.
Efficient and Affordable: The ML14KC1 meets or exceeds energy efficiencies of 14.30 SEER2, delivering comfort and energy savings at a more affordable price.
ENERGY STAR® Certified: Heating, ventilation and air-conditioning (HVAC) equipment with the ENERGY STAR label meets or exceeds federal guidelines for energy-efficient performance. An ENERGY STAR-certified furnace can reduce heating costs by 15 percent.
Our Uncontested Quantum™ Coil: With years of rigorous testing under the most extreme conditions, our Quantum Coil – featuring a proprietary aluminum alloy exclusive to Lennox – is designed to weather the harshest elements.
A refrigerant that’s better for the environment.: This product is compliant with 2025 EPA regulations for lower global warming potential (GWP) refrigerants. The Lennox choice of 2025 Compliant Refrigerant has a lower GWP than its predecessor and is formulated to provide excellent, reliable performance of your system for years to come.

ML14XC1

(Being Replaced By ML14KC1)

Standard-efficiency, single-stage air conditioner w/ Current R-410A Refrigerant

Feature Summary

Single-Stage Operation
Efficiency rating of up to 13 SEER2
ENERGY STAR® Certified
Latest 2025 EPA/MOE Compliant R-454B Refrigerant
10 Years Parts Warranty
1 Year Labour Warranty

Designed for efficient durability: The ML14XC1 air conditioner is designed for smart energy use, and designed to last. Efficiency ratings of up to 17.00 SEER mean the ML14XC1 can reduce utility bills without any compromise in comfort. It may also make you eligible for local utility rebates.
Proven Engineering: The ML14XC1 is built with a scroll compressor that's engineered to reliably deliver the cooling your home needs.
ENERGY STAR® Certified: Heating, ventilation and air-conditioning (HVAC) equipment with the ENERGY STAR label meets or exceeds federal guidelines for energy-efficient performance. An ENERGY STAR-certified furnace can reduce heating costs by 15 percent.
Dependable performance, even in harsh conditions: The coil inside an air conditioner helps keep your home cool by pulling the heat out of the air. The Lennox® Quantum™ coil handles the heat like no other. It’s constructed from fortified aluminum alloy, helping it resist corrosion in harsh conditions like coastal environments.