Bryant BW4 Boiler.

Radiant Heat Comfort with Cast Iron Reliability

Engineered for efficiency and built cast-iron tough, this boiler is one of our most advanced oil-fueled radiant heat systems. It delivers quiet, even, draft-free warmth and an AFUE rating of up to 86.2% for unbeatable energy savings.


  • Oil fuel
  • Up to 86.2% AFUE
  • Sectional cast-iron design
  • Cast-iron heat exchanger
  • Small compact design
  • Swing burner door
  • 5-year parts limited warranty and a 20-year parts limited warranty on heat exchanger section



  • Energy Efficiency Up to 86.2% AFUE                                
  • Rated Heating Input 112,000 – 189,000 BTUH
  • Rated Heating Capacity 98,000 – 189,000 BTUH
  • Heat Format Water


  • Control Type Integrated boiler control


  • Heat Exchanger Cast iron
  • Burners Oil (Beckett or Riello)
  • Ignition Spark
  • Venting Barometric
  • Fuel Oil


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