
The Dave Lennox Signature Collection represents the very finest in heating and cooling.
The new Dave Lennox Signature Collection XC21 air conditioner carries industry leading efficiency ratings of up to 20.5 SEER (Seasonal Energy Efficiency Ratio), making it nearly twice as efficient as standard air conditioners. Compared to an older unit, the XC21 can save you hundreds of dollars each year.
The XC21 not only cuts your energy costs, but it also delivers the lowest annual operating costs possible while preserving the environment. The Copeland Scroll Ultra Tech compressor uses R410A refridgerant, the EPA's standard for ozone and environmental safety.
Ultimate quiet cooling
Lennox continues to make significant strides in quiet engineering with advances in SilentComfort technology. The new XC21 air conditioner is the latest product of this evolution. A patent-pending fan design, 2-stage operation and compressor with insulated compartment, make the VC21 the ultimate in quiet cooling and efficient comfort.
Ultimate temperature and humidity control

The XC21 has two levels of operation: high for hot summer days and low for milder days. Since the low setting is adequate to meet household cooling demands up to 80% of the time, the XC21 runs more quietly and efficiently, and it removes more humidity than standard air conditioners. It's like having two air conditioners in one!
Choosing the right dealer is every bit as important as choosing
the right brand of equipment. Every Lennox dealer, which includes independently owned and operated businesses, has to meet the Lennox Quality Dealer standards. We think you'll agree they're
big reason why you can always count on getting a quality product whenever you call your Lennox dealer.
Reliabilty
The XC21 features the exclusive Lennox Systems Operations Monitor to continually measure system performance. Similar to the diagnostic system used in automobiles, the Lennox System Operations Manager helps solve problems faster and more accurately. It can even communicate with select thermostats to provide you with a "Check System" type indicator when service is needed for added piece of mind.
| For the third consecutive year, the EPA has selected Lennox as an ENERGY STAR manufacturing Partner of the Year for Lennox' ongoing commitment to producing high-efficiency products and features. Lennox is the only HVAC manufacturer ever to be chosen for this annual award. |