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Dave Lennox Signature® Collection


Air Conditioner

The most precise and efficient air conditioner available

SL28XCV Air Conditioner
Price Guide
Efficiency Rating (SEER)
up to 28
Energy Star®

10-Year Limited Warranty on covered components including compressor

View Full Product Specifications

Cooling Savings

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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.

Learn more on the Ultimate Comfort System™

The Ultimate Side of Perfect Air
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Consistently Perfect

Consistently Perfect

Precise Comfort® technology adjusts cooling output in precise and minute increments to perfectly match your energy use with your comfort.
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28 SEER is the new standard

This premier air conditioner delivers an efficiency rating of up to 28 SEER—no other air conditioner comes close to this level of efficiency. It’s truly the very top of top-tier.

This air conditioner has also been designated as one of the Most Efficient ENERGY STAR® certified products in 2022. Products that are recognized as the Most Efficient of ENERGY STAR in 2022 prevent greenhouse gas emissions by meeting rigorous energy efficiency performance levels set by the U.S. Environmental Protection Agency.

28 SEER is the new standard
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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.

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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.

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Smarter Together

With the help of the iComfort® S30 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.

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We have higher standards. Others think so, too.

Year after year, leading institutions choose to award Lennox for its innovative initiatives in product design which helps homeowners define what perfect air means to them. Below you’ll find a recognition this product has received.

We have higher standards. Others think so, too.

Ratings & Reviews

See what other customers are saying about
SL28XCV Air Conditioner

4 Stars 4/5

Very comfortable but other problems.

July 11, 2024

Perfect comfort. Condenser/compressor oriented so the back of the unit faces the yard and the street rather than the wall of the house, making for an ugly installation. Since the back of the unit is in direct sunlight the outdoor temperature readings are meaningless. Setting up of the thermostat is very convoluted. I am still working on that.


5 Stars 5/5

Cool Air, Super Quiet, Big Electric Savings !!!

July 10, 2024

We got two SL28XCV A/Cs, variable speed furnaces and the S40 smart thermostats. The AC units are so quiet and have no trouble at all against these 100+ degree humid Texas days. The smart S40 thermostats are fantastic and each allows very detailed control of both units, so no going upstairs and downstairs to set each, plus the Wi-Fi app is flawless. I do like being able to lower the temperature of the house from my phone by a few degrees so I can be greeted by that nice blast of cool dry air after taking the puppy out for a walk on a hot afternoon. I can easily tell from my smart electric meter that I'm using significantly less power than before to get the same amount of cool air and I've done the money calculation to determine that these units will pay for themselves over time based on that lower electric bill.

Green check mark

Yes, I recommend this product.

Pam and Len

Allen, TX

Age: 55 - 65

Reason for Replacement: Planned

Warranty Satisfaction:
5 Stars 5/5
July 10, 2024

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  • * Efficiency claim based on comparison of the average SEER of the SL28XCV as compared to the average SEER of the competitive variable capacity compressor units as published in AHRI (December 2020). Actual system combination efficiency may vary; consult AHRI for exact system efficiencies. Precision claim based on the average cooling capacity range of the SL28XCV as compared to the average cooling capacity of the competitive variable capacity compressor units (December 2020). Averages calculated across 2, 3, 4 and 5 tonnage.
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