ml17kc2
Air Conditioner
Mid-efficiency, two-stage air conditioner compatible with 2025 Compliant Refrigerant
ENERGY STAR® Qualified
R-454B
Merit models come with a 5-Year Limited Warranty on compressors and a 5-Year Limited Warranty on covered components. A 10-Year Extended Limited Warranty is available with product registration. For more information, visit www.Lennox.com/WarrantyYourWay.
Features
Balanced comfort and efficiency
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 18.00 SEER2, delivering comfort and energy savings at a more affordable price.
Our Uncontested Quantum™ Coil
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.
Ratings & Reviews
See what other customers are saying about
ML17KC2 Air Conditioner
4/5
Big Improvement
October 21, 2025We've had the Lennox ML17KC2 Merit Two Stage Air Conditioner installed in our home for just a couple of months, and so far, it's been a fantastic fit for our needs! From the moment it was set up, we noticed a significant improvement in our home's comfort. The two-stage cooling is a game-changer, it keeps the temperature steady without those annoying hot and cold swings we used to get with our old unit. It seem coupled with a smart thermostat the system knows exactly what our house needs, running quietly on low most of the time, which is perfect for keeping things peaceful. The unit feels well-built, and we love that it uses the eco-friendly R-454B refrigerant, which gives us peace of mind about efficiency and environmental impact. Our energy bills have been noticeably lower compared to last summer, even with some scorching days. The Quantum™ Coil seems to be doing its job, too, as the system cools our home quickly and evenly, even in the humid weather we’ve had lately. It’s also surprisingly quiet, which we really appreciate since our outdoor unit is near the patio. We can enjoy our backyard without the constant hum of an AC. Pairing it with our smart thermostat has made it even easier to control, and the whole setup feels modern and reliable. So far, we’re thrilled with the ML17KC2. It seems efficient, is nice and quiet, and keeps our home comfortable. If it continues to perform this well, we’ll have no complaints! It is not really fair to compare the Lennox with a builder grade system that was twenty-five years old and did not seem to work properly from the beginning. We highly recommend it to anyone looking for a dependable and energy-saving cooling solution.
Yes, I recommend this product.
San Jose, California
Age: 55 - 65
Gender: Female
Reason for Replacement: Emergency
4/5
4/5
3/5
5/5
Happy with purchase
September 03, 2025Much quieter than the old HVAC unit. Easy to read thermostat.
Yes, I recommend this product.
5/5
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