Performance 84 Boiler (Best)

• Up to 84.4% AFUE ...
• Cast Iron heat exchanger ...
• Gas-fired models
• Stainless steel/titanium alloy composite burners
• Fiberglass insulated casing
• Integral draft diverter
• Small, compact design
• 20-year parts limited warranty on ...heat exchanger section1
• 5-year parts limited warranty1 ...

Performance 86 Boiler (Better)

• Up to 86% AFUE
• Cast-iron heat exchanger
• Oil fuel
• Sectional cast-iron design
• Small, compact design
• Swing burner door
• 20-year heat exchanger limited warranty
• 5 year parts limited warranty

Comfort 80 Boiler (Good)

• Up to 81.6% AFUE ...
• Cast iron heat exchanger ...
• Gas-fired models
• Water or steam models
• Standard standing pilot or optional electronic ignition
• Electric vent damper
• Stainless steel/titanium alloy composite burners
• Compact design
• 20-year parts limited warranty on ...heat exchanger section; 5-year parts limited warranty (BW1, BW2)1
• 12-year parts limited warranty on ...heat exchanger section; 5-year parts limited warranty (BS1, BS2)2