Burner Sold by Heater Manufacturer Tulsa Heaters Midstream

TULSA, OK / ACCESS Newswire / June 16, 2026 / ClearSign Technologies Corporation (NASDAQ:CLIR) ("ClearSign" or the "Company"), a leader in advanced combustion and sensing technologies that help industrial operators dramatically reduce emissions, increase efficiency and support the use of cleaner fuels including hydrogen, today announces that it has received another purchase order for a ClearSign Core^™ M1 burner, one of its "M" Series process burners. The order came from heater manufacturer Tulsa Heaters Midstream ("THM") and is the second order from this customer within a month.

"We are pleased to begin seeing the strong interest in this product line translate into orders," said Jim Deller, Ph.D., Chief Executive Officer of ClearSign. "This marks the second order from THM within a month for the same customer and it is encouraging to see another order originating from the Texas, Permian Basin market. We continue to see growing interest in this product line and look forward to announcing additional orders as this momentum builds."

The ClearSign Core^™ M1 burner, sold through THM, will be installed in a new heater at a gas processing facility of a multinational energy company in West Texas. The Company expects to deliver the burner in the third quarter of 2026.

Tulsa Heaters Midstream specializes in the midstream gas processing industry and is based in Tulsa, Oklahoma.

About ClearSign Technologies Corporation

ClearSign Technologies Corporation designs and develops products and technologies for the purpose of decarbonization and improving key performance characteristics of industrial and commercial systems, including operational performance, energy efficiency, emission reduction, safety, the use of hydrogen as a fuel and overall cost-effectiveness. Our patented technologies, embedded in established OEM products as ClearSign Core^™ and ClearSign Eye^™ and other sensing configurations, enhance the performance of combustion systems and fuel safety systems in a broad range of markets, including the energy (upstream oil production and down-stream refining), commercial/industrial boiler, chemical, petrochemical, transport and power industries. For more information, please visit www.clearsign.com.

For further information:

Investor Relations:
Matthew Selinger
Firm IR Group for ClearSign
+1 415-572-8152
mselinger@firmirgroup.com

Cautionary Note on Forward-Looking Statements

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SOURCE: ClearSign Technologies

View the original press release on ACCESS Newswire

ClearSign Receives Additional "M1" Series Burner Order for Second Midstream Heater in West Texas