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Contact me about:
Super Heater Burners
Custom Build
Stoichiometric combustion
Atmospheric element style heaters

Preferred Special Combustion Engineering and W.N. Best Combustion offer state-of-the-art burners for your field-erected, package boilers, heaters, and thermal oxidizer applications. Whether your application is a coal to gas conversion, waste gas, or specialty gas, Preferred’s combustion engineers have the right burner for your new or retrofit applications.

There are multiple burner lines available:

  • Preferred X-Plus (Gun Style and Register Style)
  • Preferred Utility Burner
  • Preferred NanoNOx Burner (Ultra Low NOx)
  • Preferred API-RF and AP-AF Burners

5 MMBtu/Hr through 400 MMBtu/Hr

Ultra Low NOx, Low NOx without FGR, and Low NOx with minimal FGR are available.

Ultra High Efficiency:
1.5% - 2% Excess Oxygen Levels Available
*Stable combustion with high turndown ratio


  • Single Burner
  • Watertube
  • Auxilary Burners
  • Firetube
  • Multiburner
  • Thermal Oxidizers
  • Tangential
  • Air Heaters
  • Utility Boilers
  • Coal > Gas Conversion

Fuel Type

  • Natural Gas
  • Process / Waste Gas
  • Light/Heavy fuel oil
  • Biogas / Landfill Gas
  • Propane
  • Solid Fuel
  • Hydrogen

Preferred offers the complete combustion system solution through single-source responsibility and value-added offerings including:

Fuel Piping Trains
Offered in ANSI B31.1, Class 1 Div 2, NEMA 4, Stainless Steel, and Carbon Steel Construction. Standalone Fuel Blending skids are engineered for your Boiler or Gas Fired Generator to offset primary fuel consumption.

Burner Management and Combustion Control Systems
Engineered to your specifications in PLC, Microprocessor, Multiloop, or Combination Platforms. Control systems available in Class 1 Div 2 and Safety Integrated level designs.

Combustion Consultation
Physical Flow Modeling and Computation Fluid Dynamics (CFD) can help optimize proper air flow distribution with your proposed application. It is also offered as a service for existing field applications, including:
  • Site and Energy Surveys
  • NFPA 85 Audits
  • Turnkey Installation
  • Installation Supervision Services
  • Startup and Commissioning Services
  • Aftermarket Support

See Also