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Lennox XC21, World's First 20+ SEER Air-Conditioner
April 2005
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HVAC company Lennox Industries Inc.(LII) introduced what it claims is the world's first residential air-conditioner rated at more than 20 SEER (Seasonal Energy Efficiency Rating).

Rated at up to 20.5 SEER, Lennox says its new XC21 is the industry's quietest and most efficient central air-conditioner on the market.

"Basing the XC21 design on detailed input from more than 13,000 homeowners and almost 1,000 contractors, Lennox has seamlessly combined state-of-the-art in home comfort and serviceability," said Bob McDonough, president and COO, LII Worldwide Heating and Cooling. "It's the most impressive example yet of our commitment to lead the industry in meaningful innovation."

Part of Lennox's Dave Lennox Signature(TM) Collection, the XC21 features a new cabinet design, including SmartHinge(TM) louvered panels. Inside, the air-conditioner uses a two-stage scroll compressor with two levels of operation: high for hotter summer days and low for milder days. The two operating levels are said to allow for more energy-efficient operation because the low setting is adequate to meet household cooling demands up to 80 percent of the time. A high-efficiency outdoor coil is said to provide exceptional heat transfer and low air resistance for more efficient operation.

As an Energy Star product, the XC21 meets the U.S. Environmental Protection Agency's (EPA) energy usage standards. It also uses chlorine-free R410A refrigerant, which meets the EPA's most stringent environmental guidelines.

Other features include Lennox's SilentComfort(TM) technology, as well as a patent-pending fan design, compressor with new vibration insulators, a new sound-dampening fan grill, and a Hushtone(R) cabinet. The unit is reportedly 13 times quieter than a standard air-conditioner.

The appliance also features the Lennox System Operations Monitor, which reviews system performance and can communicate with select thermostats with a "call for service" indicator.


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