The most efficient two-stage central air conditioner you can buy*

Dave Lennox Signature® Collection

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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.
Efficiency rating of up to 21.20 SEERTwo-Stage coolingSilentComfort™ technologySilentComfort™ Outdoor Fan Motor with Composite Fan Blades
Efficiency rating of up to 21.20 SEER can save you hundreds of dollars each year, compared to a standard air conditioner.
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Two-Stage cooling allows the XC21 to run more efficiently and produce more even temperatures than a conventional single-stage system.
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SilentComfort™ technology delivers sound levels as low as 69 dB, approximately 20% quieter than a standard air conditioner.†
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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.
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The XC21 Air Conditioner At A Glance:

  • Energy Efficiency
  • Quiet Operation
  • Home Comfort
  • Performance
  • Environmentally Responsible
  • Energy Savings Calculator

Energy Efficiency

    The most efficient two-stage central air conditioner you can buy*

    Efficiency ratings of up to 21.20 SEERcan save you hundreds of dollars a year, compared to a standard air conditioner

    ENERGY STAR® certified meets or exceeds EPA guidelines for energy efficiency

    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**

    High-efficiency outdoor coil provides exceptional heat transfer and low air resistance for high-efficiency operation

    Federal, state and local tax rebates and incentives may be available with a SunSource solar installation.***

Quiet Operation

    SilentComfort™ technology delivers sound levels as low as 69 dB, approximately 20% quieter than a standard air conditioner.††

    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

    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

    SilentComfort™ Outdoor Fan Motor with Composite Fan Blades provides extremely reliable starting and running performance, even under the harshest outdoor conditions

    PermaGuard™ Cabinet heavy-gauge, 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 interior components from all sides for cleaning and maintenance. Protects coils from damage and provides clean appearance

Environmentally Responsible

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

    Chlorine-free R-410A refrigerant provides exceptional comfort without exacting a costly environmental toll

    Listed in the GreenSpec® Directory a leading resource of environmentally responsible products