| Rating |  |
| Price Guide | $$$$ |
| Efficiency Rating (SEER) | up to 25.5 |
| Efficiency Rating (SEER 2) | up to 26.5 |
| Efficiency Rating (HSPF) | up to 13.2 |
| Efficiency Rating (HSPF2) | up to 13.6 |
| Energy Star® | ENERGY STAR® Qualified |
| Warranty | 5-Year Limited Warranty on covered components. 7-Year Limited Warranty on compressor. This product may be eligible for valuable 12-Year Limited Extended Warranty coverage with product registration. |
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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 UltimateComfort System™
Consistently Perfect
Precise Comfort® technology adjusts cooling output in precise and minute increments to perfectly match your energy use with your comfort.
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.
Smarter Together
With the help of the iComfort® S30 ultra smart thermostat, the SLP99V gas furnace 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.
Beyond Quiet
Even with all of its impressive power, this furnace is the quietest you can buy and has been engineered to run at variable speed to drastically minimize the sound of air kicking on or off inside the home.
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.
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.
Ratings & Reviews
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5/5A Remarkably Quiet Heating Experience
2 January, 2023
I recently decided to replace my aging furnace, and I was promised that the new one would be remarkably quiet. Initially, I had my doubts because my old furnace didn’t seem all that noisy to me. However, I was in for a surprise. On the first frosty night after the installation, I quickly realized just how wrong I had been about my old furnace’s noise level.
It turns out that I had grown so accustomed to the constant hum of my previous furnace that I hadn’t noticed how disruptive it could be. With the new furnace in place, I enjoyed an uninterrupted night’s sleep, and it dawned on me that I hadn’t heard a single noise from the heating system. The tranquility it brought to my home was truly unexpected and welcome.
Beyond its silent operation, this furnace has significantly improved the comfort of my home. It effortlessly maintains a consistent and cozy temperature, even during the harshest weather conditions.
I also need to mention the S30 thermostat that came with the furnace. It’s not only incredibly easy to use but also adds a modern touch to my home’s interior. The weather screen savers it offers are a delightful bonus, providing captivating visuals that make checking the temperature a more visually appealing experience.
I want to extend my heartfelt thanks to Van Haaften Plumbing & Heating for their outstanding service and for introducing me to this exceptional furnace. It has not only exceeded my expectations in terms of its silence but has also made my home a more peaceful and comfortable place to live.
John Deo
Age Group: 45 – 54
Gender: Male
Motivation for Replacement: New Property Acquisition
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