ProFire® SBR-5

Ultra Low-NOx Burner

  • <5 ppm NOx with FGR
  • ~3% O2 across a wide load range
  • Up to 6:1 turndown ratio when firing gas
  • Dual fuel capability
  • Fuel switch over without mechanical adjustments

The ProFire SBR-5 series burner, capable of less than 5 ppm NOx emissions with FGR, offers: natural gas fuel option from 10.5 to 42 MMBTU/hr.

The ProFire SBR-5 series is designed for a variety of boiler types such as firetubes, and watertubes. Capable of less than 5 ppm NOx emissions with FGR, the ProFire SBR-5 series features a unique firing head design to achieve controlled combustion leading to ultra-low emissions with 3% O2. Advanced technology allows the SBR series to offer ultra-low-NOx, low CO emissions and up to 6:1 turndown on natural gas.


  • Ultra-Low-NOx Emissions as low as 5 ppm achieved with FGR
  • 3~4% O2 across a wide load range
  • Maximum Efficiency provided by standardized parallel positioning
  • Uniform Flame for equal heat transfer allowed by premix fuel
  • Easy Access air housing for internal components
  • Silent operation with an advanced combustion air fan wheel; Less horsepower and less noise
  • Induced FGR modulating valve
  • Ultra-Low-NOx/CO achieved without a fragile surface combustion burner head, making it safer and more reliable, and requires less maintenance
  • Integrated Controls with remote IoT monitoring capabilities


  • Lower Fuel Cost
  • Lower Emissions


  • Process Steam
  • Industrial Process
  • Building Heat
  • Hospital and Healthcare
  • Refineries & Petrochemical
  • Laundry and Dry Cleaning

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