Product Comparison: Boilers

  Preferred BW9 Boiler
Preferred™ BW9 Boiler		 Preferred BW 4/5 Boiler
Preferred BW 4/5 Boiler		 Preferred BW3 Boiler
Preferred BW3 Boiler		 Legacy BW/BS Boiler
Legacy™ BW/BS Boiler
Performance
Efficiency AFUE Up to 90 AFUE Up to 86.5 AFUE Up to 84.4 AFUE Up to 82.7 AFUE
Heat Rating BTUH 50,000 to 200,000 BTUH 91,000 to 280,000 BTUH 42,500 to 225,000 BTUH 37,500 to 299,000 BTUH
Energy Star Check Check    
Features
Gas-Fired Models Available Check   Check Check
Oil-Fired Models Available   Check    
Easy Access Burner Door Design   Check    
Heat Exchanger Cast Aluminum Cast Iron Cast Iron Cast Iron
Electric Ignition Check     Check
PVC Vent Pipes Check      
Induced Draft Pan Check   Check  
Pressure Relief Valve Check      
Controls
Integrated boiler control Check Check Check Check
Warranty
Heat Exchanger 15 years 20 years 20 years 12 years
Parts 5 years 5 years 5 years 5 years
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