XC21 Air Conditioner

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.

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.

This product has been designated as one of the Most Efficient ENERGY STAR certified products in 2017. Products that are recognized as the Most Efficient of ENERGY STAR in 2017 prevent greenhouse gas emissions by meeting rigorous energy efficiency performance levels set by the U.S. Environmental Protection Agency.

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.

Two-Stage cooling allows the XC21 to run more efficiently and produce more even temperatures than a conventional single-stage system.

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

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

  • Efficiency ratings of up to 21.20 SEER
  • The most quiet and efficient central air conditioner you can buy
  • Sound levels as low as 69 dB
  • SunSource® Solar-Ready Air Conditioner
  • icomfort™-enabled technology
  • Two-stage scroll compressor with SilentComfort™ technology
  • 10-Year Limited Warranty on compressor and covered parts
  • Federal, state and local tax rebates and incentives may be available with a SunSource solar installation. Consult you tax advisor for details.
  • Publications:



    AHRI Certified C


    ETL Listed U.S. (C) Intertek


    HRAI Canada

    Humiditrol (R)


  • 10-Year Limited Warranty on covered components including compressor
  • *Efficiency ratings established per AHRI’s test standard: ANSI/AHRI 210/240-2017 of two-stage central AC/HP equipment.
    **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.