Burnham® ES24BNI-T ES2™ 4-Section Gas-Fired Steam Boiler With Intelligent Hydronic Control and Vent Connector, Natural Gas Fuel, 77 mbh Net IBR, 105 mbh Input, Chimney Vent, Cast Iron, 1-1/4 in NPT Connection, Electronic Ignition, Domestic

  • AFUE Rating: 85 %
  • Amperage Rating: 15 A
  • Connection Type: 1-1/4 in NPT
  • Country of Origin: US
  • Dimensions: 15-1/2 in W x 33 in D x 41 in H
  • Domestic/Import: Domestic
  • Flue Outlet Size: 5 in Dia
  • Fuel Type: Natural Gas
  • Fuse Size: 3 A
  • Input Capacity: 105 mbh
  • Manufacturer Name: U.S. Boiler Co
  • Net IBR Rating: 77 mbh
  • Series: ES2™
  • Type: 4-Section
  • Vent Type: Chimney
  • Voltage Rating: 120 VAC
  • Water/Steam Content: 3 gal
  • Brand: Burnham®
The ES2™ blends unmatched performance with long lasting durability and exclusive energy saving features. Designed as an optimal replacement boiler for millions of homes with existing chimneys, the ES2™ achieves an 85% AFUE. At the heart of the ES2™ is one of the most advanced cast iron heat exchangers in the industry and a well-insulated heavy-duty steel base for longevity. Even the ES2™'s control system is class leading. The IQ Boiler Control System allows the ES2™ to be easily equipped with an optional energy saving control package that can achieve up to a 15 to 20% reduction in fuel consumption according to most studies.
  • Features and More


  • Exclusive IQ control system platform
  • Reliable, American-made cast iron heat exchanger
  • Designed for homes with existing chimneys
  • Industry standard tapping locations fit thousands of existing boiler installations
  • IQ boiler control system


  • 007-2 Taco® Circulator Pump
  • Integrated Draft Diverter
  • Connector
  • Damper and 1 in Burner


  • AHRI Certified
  • ASME Specified
  • cETLus Listed
  • USA - National Fuel Gas Code ANSI Z223.1/NFPA 54


  • 1 Year Limited on Boiler