Product Comparison: Heat Pumps

  Evolution System
Evolution® System		 Preferred Series
Preferred™ Series		 Legacy™ Line
Legacy™ Line
Performance
Efficiency SEER Up to 19 SEER Up to 16.5 SEER Up to 16 SEER
Efficiency HSPF Up to 9.25 HSPF Up to 9.5 HSPF Up to 9.0 HSPF
Efficiency EER Up to 13.7 EER Up to 13.3 EER Up to 13.0 EER
ENERGY STAR® units available Check Some Models  
Puron® Refrigerant Check Check Check
Two-Stage Scroll Compressor Check (226A only)  
Scroll Compressor Check Check Check
Sound
Quiet Level As low as 68 dB As low as 74 dB As low as 76 dB
Duraflow Design Check Check  
Controls
Evolution® Control Ready Check    
PerfectHumidity® System Check (226A only)  
Evolution Diagnostics Check    
PerfectHeat® Pump System*
* with VS fan coil		 Check Check  
Durability
DuraGuard™ Plus
Protection Package		 Check Check Some Models