Product Comparison: Central Air Conditioner

  Evolution System
Evolution™ System		 Preferred Series
Preferred™ Series		 Legacy Line
Legacy™ Line
Performance
Efficiency SEER Up to 20 SEER Up to 14 SEER Up to 14 SEER
Efficiency EER Up to 14.5 EER 11.5 EER 11.5 EER
Energy Star Check Check Some models
Puron® Refrigerant Check Check Some models
R-22 refrigerant   Check Some models
Two-Stage Scroll Compressor Check    
Two-Stage Reciprocating Compressor      
Sound
Quiet Level As low as 70 dB As low as 69 dB As low as 79 dB
AeroQuiet System II™ Check Check  
Controls
Evolution Control Ready Check Check  
PerfectHumidity® Check Check  
Evolution Diagnostics Check Check  
Durability
DuraGuard™ Plus Check Check  
Warranty
Compressor 10 years 10 years 10 years
Parts 5 years 5 years 5 years
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