XC21​​ Lennox Air Conditioner – Up To 21 SEER, Two Stage

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  • Efficiency ratings of up to 21 SEER – Can save hundreds of dollars a year, compared to a standard air conditioner
  • High-efficiency outdoor coil – Provides exceptional heat transfer and low air resistance for high-efficiency operation
  • Precision-balanced, direct-drive fan – Delivers ultra quiet operation with a patent-pending fan design
  • SilentComfort™ fan grille – Provides vortex suppression to reduce sound of airflow exiting unit
  • Insulated compressor compartment – Minimizes operating sounds with innovative, industry-leading materials and sound-isolating
  • Dependable scroll compressor with Silent Comfort™ technology – Provides smooth, efficient and reliable operation
  • Listed in the GreenSpec® Directory – Leading resource of environmentally responsible products
SKU: XC21 Categories: ,
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XC21​​​​ Lennox Air Conditioner

Discover absolute home comfort with the XC21​​ Lennox Air Conditioner, engineered for quiet and highly efficient operation. Exclusive SilentComfort™ technology works to maintain a more consistent temperature throughout your home, while helping to keep their energy costs under control.

Cooling Savings

Heating and cooling can account for about half of a home’s total utility bill. By upgrading to a high-efficiency system, you can cut your energy costs while keeping your family perfectly comfortable. See how much money could be saving with a XC21​​ Lennox Air Conditioner.

Save per year*
5-year savings 10-year savings 15-year savings
$850 $1,700 $2,550
*based on national average

Home Comfort

An energy-smart decision you’ll appreciate every day
With efficiencies of up to 21.00 SEER, the XC21 can lower your energy bills by hundreds of dollars a year, while still keeping your home cool and quiet.

Balanced comfort
The XC21’s multi-stage scroll compressor allows it to fine-tune your cooling, humidity levels and energy use by matching output to demand.

XC21​​ Lennox Air Conditioner –  Most Efficiencies 2018

Advanced engineering in the XC21​​ Lennox Air Conditioner means enjoying smart, energy-efficient comfort all year long. This product has been designated as one of the Most Efficient ENERGY STAR certified products in 2018. Products that are recognized as the Most Efficient of ENERGY STAR in 2018 prevent greenhouse gas emissions by meeting rigorous energy efficiency performance levels set by the U.S. Environmental Protection Agency

Reliable Peformance

The XC21 is designed for lasting reliability and performance. High-quality materials and innovations like the PermaGuard™ cabinet offer extra protection against rust and corrosion, so your unit runs better and longer.

  • SilentComfort™ Outdoor Fan Motor with Composite Fan Blades – Provides extremely reliable starting and running performance, even under the harshest outdoor conditions.
  • PermaGuard Cabinet – Heavy-guage, galvanized steel construction, louver coil guard, baked on powder finish and durable zinc-coated steel base provide long-lasting protection against rust and corrosion.
  • SmartHinge louver design – Allows quick, easy access to the interior components from all sides for cleaning and maintenance. Protects coil from damage and provides clean appearance.

Peace and Quiet

Quiet Operation – Sound levels—as low as 69 dB. When the XC21 is running, you’ll hardly hear it. Innovative silentComfort™ technology combines thick insulation, vibration resistance and a specially shaped fan blade to greatly reduce sound levels, making it the quietest multi-stage air conditioner you can buy. Even when installed outside a bedroom window, the XC21​​ Lennox Air Conditioner lets you rest peacefully.

Designed to Work With Humiditrol Whole-home Dehumidification System

Humidity levels can drastically affect how the air in your home feels. It can make the air feel up to 8 degrees warmer than the actual temperature. By working with the Humiditrol® whole-home dehumidification system, the XC21​​ Lennox Air Conditioner can preserve your comfort in every way.

Solar Ready, for the Highest Possible Energy Saving

SunSource® Solar-Ready option
Because it’s solar ready, the XC21 can be easily combined with solar roof modules in a SunSource® Home Energy System. This means it can use free energy from the sun to keep your home cool.

Renewable energy resource
Delivers environmental benefits when upgraded to a SunSource® Home Energy System that turns solar energy into electricity for the home.

Enjoy the Comfort of Connectivity

iComfort™-enabled technology allows the air conditioner, when installed with the easy-to-use programmable iComfort Wi-Fi® Touchscreen Thermostat, to exchange information and make adjustments as needed to optimize performance and efficiency.

XC21​​ Lennox Air Conditioner – Energy Star® Qualified

When you choose ENERGY STAR qualified heating and cooling products like XC21​​ Lennox Air Conditioner, you know you’re making a smart choice that can significantly reduce your monthly utility costs.

XC21​​ Lennox Air Conditioner - Energy Star

Lennox offers a wide variety of home heating and cooling products that have earned the ENERGY STAR® label. Each of these products has been designed to deliver year-round energy savings, along with other comfort-enhancing benefits, such as more even temperatures, better humidity control and consistent airflow. If you install a new ENERGY STAR® heating or cooling system, you may qualify for local utility rebates and other energy incentives​.

Chlorine-free R-410a Refrigerant

A friendlier refrigerant refrigerant , which meets the U.S. EPA’s most stringent environmental guidelines. Lennox was one of the first HVAC manufacturers to develop R-410A as an alternative to R-22 (freon). The XC21’s scroll compressor uses the chlorine-free R-410A

Lennox Warranty/XC21​​ Lennox Air Conditioner

Perfect comfort is comfort that brings you peace of mind. That’s why we stand behind our innovative heating, cooling and indoor air quality products with industry-leading warranty coverage. 10-Year Limited Warranty on covered components including compressor.

Home Comfort System

Every Lennox® product has been engineered to deliver best-in-class comfort and efficiency. And when two or more Lennox products are working together as part of a system, the results are truly outstanding.

Your home comfort system is essential to keeping you warm in the winter and cool in the summer. It also helps protect you from allergens and pollutants year round. A home comfort system is made up of Air Conditioner and: Furnace, Thermostat and Indoor Air Quality.

Why Choose a XC21​​ Lennox Air Conditioner?

We can tell you all day about how you can trust a Lennox air conditioning system to meet your cooling needs completely. But in the end, what makes us so confident? Lots of things! Lennox holds a long history of excellence—they got their start all the way back in 1895.

Since opening up as a global heating, cooling, and air quality product manufacturer they have focused heavily on superior design and dependable performance, and a constant sense of growth and innovation has been their hallmark all the while. In other words, when you want an HVAC system built with your needs in mind, rather than a cookie-cutter cooling system, then you want Lennox.

If you plan on installing a new Lennox Air Conditioning system, or want to expand your existing system, we’ll be happy to schedule a no-cost in home evaluation with one of our trained comfort advisors. We know you want reliability and good value. That’s why we work with the top name brands in the industry. Let us design an efficient, cost-effective system for you. It’s what we do.

Ready to gain the advantages of a new Lennox system for your Chicag, IL home, or looking for HVAC contractors that can keep your system working at its best? Contact GSHA Services, LTD today!

Additional information



ENERGY STAR® Certified



Up to 21 SEER

Stages of Cooling


Sound Rating

69 dB

Questions & Answers

Customer Questions

Is Lennox air conditioners any good?

Reviewers say its Lennox air conditioners are reliable, and because the company has three tiers of products, there's a Lennox for every budget. So right now, you might be asking yourself: Why is Lennox better? What makes this brand so unique? It’s pretty simple:

- Lennox is constantly working to improve the technology - when you opt for the Lennox brand, you are signing up for cutting-edge technology that will ensure the comfort and health of your home.
- Lennox is reliable - history speaks for itself. Throughout the decades, Lennox customers have come to expect a high level of reliability from Lennox. With regular tune-ups, your Lennox HVAC system can serve your family for years to come.
- Lennox understands the need for control - the truth is, you won’t always be home. So with the help of mobile technology, you can adjust your HVAC settings at home even when you’re away.

Lennox has some of the most energy efficient HVAC products on the market, making it a good choice for those concerned with saving money on their monthly utility bill.

How long does a Lennox air conditioner last?

If you look at the warranty your AC comes with you know that it will last at least this many years. But even if you need to replace a component, you can be sure that the machine will keep running a lot longer than this. The U.S. Department of Energy says that the average lifespan for an AC system is between 15 and 20 years. Lennox is way above average.

Are Lennox air conditioners made in the USA?

Yes. Every Lennox product is made in its US factories. Even the components and individual parts. Based in Richardson, Texas, near Dallas, Lennox has manufacturing and distribution facilities across North America. Products are available through a network of more than 6,000 independent Lennox® Dealers.

Which central air conditioner is better Lennox VS Carrier?

Lennox and Carrier both offer efficient and reliable AC units for your home. Each model has its own strengths and shortcomings, so which brand you choose will ultimately depend on your specific needs. It's best to go with Lennox for more advanced technology and energy-efficient units, while you can choose Carrier for more air conditioning features at lower prices and more convenience.

It’s just as essential who installs your air conditioner as it is what brand you select. This detail has an impact on the quality of your installation and the unit’s longevity. Professionals that sell a variety of air conditioners rather than a single brand are also more likely to be upfront with you about your decision.

How much does an air conditioner cost for a 2000 sq ft home?

The price for a Lennox air conditioner unit can range from $3,200 to $7,800 in installation costs. Your total cost to install will depend on the size in tons of the air conditioning system needed for your home and the SEER rating wanted. For a 2000 square ft home you would want a 3 ton air conditioner unit and the average installation cost would be around $3,900.

To get exact local costs, contact us today and get free estimate. Our estimates for any project are provided without cost or obligation. If you’re considering GSHA Services, LTD for affordablehome ac installation, you get a free estimate in your home. It’s that simple.


Reviews of GSHA Services, LTD

Consumer reviews represent the best source of information about customer satisfaction our services. Read recent HVAC service reviews from GSHA Services, LTD customers.

Rated 5 out of 5

Gsha are the best! They are punctual precise and the best guys for our heating and ac needs. Ive used them for over 7 years and have referred them to everyone.

Noel Martinez
Rated 5 out of 5

Technicians arrived on time – good communication, good cleanup and the installation appears to be very well done. First experience with this company and pleased thus far

Paul V
Rated 5 out of 5

We had an issue with cooling fans of air conditioning system. ********* Drag came to address the problems. He was kind and highly knowledgable, and explained well as he diagnosed and identified what the problem was. In the past we hired technicians from other companies, but this was the best experience. I am glad that I contacted GSHA service this time. Thank you very much for your excellent services.

Jae W
Rated 5 out of 5

The salesperson and installation crew listened to what I wanted. The installation and removal were clean. I will use them for future projects.

Dean C
Rated 5 out of 5

THE BEST! Office manager fantastic…very professional and knowledgeable. You always get a great REAL person!!! Service professional on time and does a great efficient job! I cannot say enough about this business. They installed my HVAC system and maintain it. This is the one business I love to call and make appointments with !

Audrey Manley
Rated 5 out of 5

Incredibly good service. They came to provide a quote within 24 hours, and provided several efficiency options across several OEMs. After we quoted six other companies, GSHA had the best pricing, so we went with them. They showed up the next day, demoed the old system and installed the new furnace and A/C in one day. We couldn’t be happier. The quote provided was exactly what we paid; no secret add ons. They deserve all the stars.

ti ger
Rated 5 out of 5

Jakub was professional, friendly and helpful!

mia stclair
Rated 5 out of 5

Great experience. The guys that came were professionals, respectful, and hard worker’s. I will highly recommend

Aris Angelakopoulos
Rated 5 out of 5

Very polite, punctual, and professional.

Anna Marie
Rated 5 out of 5

I’ve been using them for well over 6 years and have yet to have a single problem with any of their staff. Polite, on-time, good value, and great customer service.