Bryant BW3 Boiler

Bryant BW3 Boiler.

Radiant Heat Versatility for Reliable Home Comfort

Our most versatile gas-fired, radiant heat system, engineered with an up to 84.4% AFUE rating for outstanding energy efficiency. Rugged cast-iron construction and compact design make it a value-add fit for any home.


  • Up to 84.4% AFUE
  • Cast iron heat exchanger
  • Gas-fired models
  • Stainless steel/titanium alloy composite burners
  • Fiberglass insulated casing
  • Small, compact design
  • 5-year parts limited warranty and a 20-year parts limited warranty on heat exchanger section



  • Energy Efficiency Up to 84.4% AFUE                               
  • Rated Heating Input 42,500 – 187,000 BTUH
  • Rated Heating Capacity 36,000 -158,000 BTUH
  • Heat Format Water


  • Control Type Integrated boiler control


  • Heat Exchanger Cast iron
  • Burners Titanium composite
  • Ignition Intermittent pilot
  • Vent damper Induced-draft
  • Fuel Gas


  • Casing Full fiberglass insulation
  • Section Seals Cast iron push nipples