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Our Products. Your Solution.

We are committed to developing innovative and differentiated combustion solutions. Our technologies for new systems and retrofits include sub 5 ppm NOx guarantees, no flame impingement, low CO emissions and reliable flame detection. ClearSign enables businesses of every scale the opportunity to incorporate combustion solutions that not only meet or exceed their operational and financial needs and goals, but also dramatically improve environmental impact.

Awarded Grant from Department of Energy to Develop a Hydrogen Fueled Ultra Low NOx Process Burner

May 24th, 2022|Homepage News, Investor News, Press Releases|

ClearSign Technologies Corporation Awarded Grant from Department of Energy to Develop a Hydrogen Fueled Ultra Low NOx Process

ClearSign Technologies Corporation Announces Initial Order for Multi Heater Project from California Refinery

March 29th, 2022|Homepage News, Investor News, Press Releases|

Project Comprised of 20 ClearSign Core™ Process Burners in Two Heaters   Tulsa, OK, March 29, 2022 --

Research & Development

We are creating new and improved technologies that offer unique solutions to some of the world’s most pressing productivity, energy efficiency and pollution problems affecting the energy, oil and gas production, boiler and processing industries.  At our testing facility in Seattle, our team strives to develop solutions that increase emissions efficiency while maintaining our focus on durable, cost-effective solutions.


A Solution for All Industries

Regulatory mandates are the common theme among the industries ClearSign serves. We are the trusted leader in combustion solutions by providing unmatched innovation, quality and service in the industries we engage.

Heater with Ultra Low Sub 5ppm NOx process burner

Industrial Segments for Heater Technologies

  • Refinery
  • Petrochemical
  • Reforming
  • Midstream Oil and Gas


Industrial Segments for Boiler Technologies

  • Chemical
  • Food
  • Steel
  • Cement
  • Residential Heating
  • Refinery
  • Petrochemical

Enclosed Combustor in snow on oilfield production site

Industrial Segments for Flaring Technologies

  • Upstream Oil and Gas
  • Midstream Oil and Gas
  • Downstream Oil and Gas
  • Biogas
  • Wastewater


Industrial Segments for Sensing Technologies

  • Power and Steam Generation
  • Refinery
  • Flaring

  • Jeff Lewallen ClearSign Employee

Featured Customers & Partners

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