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Carrier BW3 Performance 84 Boiler

The Performance 84 Boiler is a versatile gas-fired, radiant heat system. Our engineering makes it efficient, with up to 84.4% AFUE rating. And with the Carrier name, you know it's a reliable unit you can count on.

  • Up to 84.4% AFUE
  • Cast Iron
  • Gas-fired models
  • Stainless steel/titanium alloy composite burners
  • Fiberglass insulated casing
  • Integral draft diverter
  • Small, compact design
  • 20-year parts limited warranty on section
  • 5-year parts limited warranty
  • Casing: Full Fiberglass Insulation
  • Nipples: Cast Iron Push
  • Dimensions (inches): 11 - 27 1/4"
  • Control Type: Integrated boiler control
  • Energy Efficiency: 82.0% - 84.4% AFUE
  • Rated Heating Input: 42,500 - 225,000
  • Rated Heating Capacity: 36,000 - 186,000
  • Heat Format: Water
  • Limited Warranty: 5-year parts limited warranty; 20-year parts limited warranty on section
  • Quiet Level: 5
  • Energy Efficiency: 5
  • Durability: 6
  • Cast Iron
  • Burners: Titanium Composite
  • Ignition: Intermittent Pilot
  • Vent Damper: Induced-Draft
  • Fuel: Gas
Really nice job routing the coils and wires on the inside and outside the house. I know it was not easy and really appreciate the extra effort and...

Chris - Bothell

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Thank you to Sam and Denis. They were very professional, personable and patient with my questions. Their attention to detail was appreciated. They...

Joe - Everett

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We can’t be happier with the furnace and service!!!

Chris - Seattle

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