Dave Lennox Signature® Collection
XC21 Air Conditioner
The quietest and most efficient two-stage central air conditioner you can buy3
Discover absolute home comfort with the XC21, engineered for quiet and highly efficient operation. Exclusive SilentComfort™ technology works to maintain a more consistent temperature throughout your home, while helping to keep energy costs under control.VIEW PRODUCT DEMO >>
Here are some of the top features of the XC21:
Efficiency rating of up to 21.20 SEER can save you hundreds of dollars each year*, compared to a standard air conditioner.
SunSource® Solar-Ready option allows you to add solar modules and create a solar powered system that generates electricity for your air conditioner and more.
ENERGY STAR® qualified which means it meets or exceeds EPA guidelines for energy efficiency.
This product has been designated as one of the Most Efficient ENERGY STAR qualified products in 2014. Products that are recognized as the Most Efficient of ENERGY STAR in 2014 prevent greenhouse gas emissions by meeting rigorous energy efficiency performance levels set by the U.S. Environmental Protection Agency.
SilentComfort™ Outdoor Fan Motor with Composite Fan Blades provides extremely reliable starting and running performance, even under the harshest outdoor conditions.
Features and Benefits
Warranty and Specs
Rated 4.8 out of 5 by 115 reviewers.
Rated 5 out of 5 by Gladweboughtit Great I never write reviews but in this case made an exception. We had to replace a 13 year old unit (a/c and heater). The outside unit was quite noisy and bothersome whenever it was running. As we were researching new units this Lennox model kept coming up for quietness and operation. In short, while it is expensive, it is an amazing unit and thus far has given us no problems (4 months into its use). It is whisper quiet. We almost went with a less expensive unit but we are glad we chose this one. October 3, 2013
Rated 5 out of 5 by Morton22 Product has great performance The air conditioner is performing great and solved an existing problem of cooling an upstairs area very efficiently. August 14, 2014
Rated 5 out of 5 by BW7778 The system is quiet. I like that the air conditioner will operate as a 3 ton unit so as to save energy. It is quiet and I like that it is a 2 stage unit. I also like the circulating fan option. August 13, 2014
Rated 5 out of 5 by WildBill57 This product is unbelievably quiet This product runs so quietly that I have to look at the drapes to see if they're moving to know if the air conditioner is running. I have received one billing from my power company since the unit was installed, which was slightly lower than the previous month. I am anxious to see how the total year savings stack up. August 13, 2014
Rated 5 out of 5 Happy with our new air system! The air quality and comfort and quiet is far superior than the unit it replaced. August 13, 2014
Rated 5 out of 5 by HappyPerson Great and Quiet AC Seeing a savings in my power consumption. It is so quiet that at first we question if the unit was running. August 13, 2014
Rated 5 out of 5 by Mike505 Units have done a very good job cooling our house this summer. We have been pleased with the purchased of our two XC21 units. They have kept our house very cool & comfortable this summer. I like the ability to customize the control of the units with the I-Comfort thermostat. August 12, 2014
Rated 5 out of 5 by Pipcori Quiet and efficient The difference between our old unit and this one is amazing. You can hardly hear the unit when it runs and so far it has been performing well. iIn comparison with the competitors systems we believe that the value we are getting is superior. August 11, 2014
*This chart compares the 5-year savings you can expect from a 21.20 SEER air conditioner vs. existing equipment with a 10.00 SEER rating and industry-standard equipment with a 13.00 SEER rating. The region used to calculate household fuel and utility costs reflect a cross-section of cities in the U.S. In addition to geography, cooling costs are based on 3-ton capacity specifications, with 1,800 cooling hours per year and 11.62 cents per KWh (Source: EIA National average electric rate-Rolling 12 months ending July 2009). Your actual costs will vary depending on the weather, local fuel rates, system settings and your personal lifestyle.
**iComfort Wi-Fi® Touchscreen Thermostat must be installed with an iComfort-enabled indoor unit for maximum performance.
***Consult your tax expert before claiming energy efficiency tax credits.
****Must be accompanied by either a variable speed air handler or furnace and the ComfortSense® 7000 Series touchscreen thermostat.
†Sound Rating Number according to ANSI/AHRI Standard 270-2008. "SRN" is the overall A-Weighted Sound Power Level, (LWA), dB (100Hz to 10,000Hz). Sound information based on 3 ton models. Standard system is a 13ACX with a 76 dB sound rating.