Lennox XC21 Air ConditionerThe most quiet and efficient central air conditioner you can buy
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.
Energy Efficency | Quiet Operation | Home Comfort | Performance

Recognitions and Certifications
Energy Efficiency
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Efficiency ratings of up to 21.00 SEER—can save you hundreds of dollars a 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, reducing energy consumption and utility costs
icomfort™-enabled technology—allows the air conditioner, when installed with the easy-to-use programmable icomfort Touch® Touchscreen Thermostat, to exchange information and make adjustments as needed to optimize performance and efficiency
ENERGY STAR® qualified—meets or exceeds EPA guidelines for energy efficiency
High-efficiency outdoor coil—provides exceptional heat transfer and low air resistance for high-efficiency operation
Quiet Operation
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Sound levels as low as 69 dB—approximately 13 times quieter than a standard air conditioner
SilentComfort™ technology—delivers the ultimate in quiet, consistent cooling
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 mounts
Home Comfort
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Dependable scroll compressor with Silent Comfort technology—provides smooth, efficient and reliable operation
Humiditrol® whole-home dehumidification system; compatible—allowing the system to manage the moisture in your home's air for greater comfort and improved indoor air quality
Performance
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SilentComfort™ Outdoor Fan Motor with Composite Fan Blades—provides extremely reliable starting and running performance, even under the harshest outdoor conditions
SmartHinge™ louvered design—allows quick, easy access to interior components from all sides for cleaning and maintenance. Protects coils from damage and provides clean appearance
Durable steel cabinet—made to last with superior high-quality, pre-painted steel and textured finish. Tested to withstand the harshest environments
10-Year Limited Warranty on compressor and covered components
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