Preferred Series BW4/5 Boiler

Radiant Heat Comfort with Cast Iron Reliability

Models: BW4B BW4R BW5B BW5R

Engineered for efficiency and built cast iron tough, the Preferred BW4/5 Boiler is our most advanced oil-fueled radiant heat system. It delivers quiet, even, draft-free warmth and an AFUE rating of up to 90% for unbeatable energy savings.

Ratings:

• Energy Efficiency6 of 7
• Quiet Level6 of 7
• Durability6 of 7

Key Features

• Oil fuel
• Up to 86 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 (BW4B)
• 5-year parts limited warranty and a 20-year parts limited warranty on heat exchanger section (BW4R)
• 5-year parts limited warranty and a 20-year parts limited warranty on heat exchanger section (BW5B)
• 5-year parts limited warranty and a 20-year parts limited warranty on heat exchanger section (BW5R)