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84% Efficiency

Series 3

Gas, Water
Cast Iron Heat Exchanger

US Boiler Series 3

Advanced Energy Saving Features Integrated with a Modern Design

The Series 3 shares many of its features with the award winning ES2, including the durable cast iron heat exchanger, rugged heavy gauge steel base, and the innovative IQ Control System. The IQ Control System allows the Series 3 to be easily equipped with an optional energy saving control package that, according to many studies, can deliver up to a 15-20% reduction in fuel consumption. In addition, the Series 3 provides even more flexible chimney venting options making it the right choice for millions of homes.

  • Natural or LP gas
  • Time proven cast iron design for durability and reliability
  • Optimum venting flexibility for homes with existing chimneys
  • Lifetime limited warranty
  • Optional 5 or 10-year parts & limited labor warranty
  • Product Data Sheet & Specifications
  • Technical Manuals & Information
US Boiler Series 3
  • IQ Boiler Control System IQ Boiler Control System
  • Related Water Heater Related Water Heater
  • Manufacturer's Warranty Manufacturer's Warranty
  • AHRI Energy Labels & Product Certification AHRI Energy Labels & Product Certification
U.S. Boiler Company is a leading manufacturer of home heating equipment, water boilers, steam boilers, hot water heaters, radiators and boiler control systems.
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