Burnham ESC3C, 45,000 BTU Output Cast Iron Gas Boiler (NG)

Note: Product Title reflects this boiler's IBR Net Output Rating The ESC boiler is a modern, versatile boiler designed to maximize the comfort and efficiency of nearly any heating system by delivering the perfect balance of energy-saving performance, durability, and features for homes where a chimney-vented boiler is not an option. Features: 85% AFUE Electronic ignition Easy, intelligent IQ Control System™ Outdoor reset available - increases efficiency by 15-20% Ideal for installations where chimney venting is not possible, industry standard tapping locations permit ease of replacement for thousands of existing boiler installations Rear jacket panel of boiler is flat with no protrusions, simplifies transport and enables flush installations Reliable, American-made cast iron heat exchanger can accept return water temps as low as 110°F Lifetime limited warranty