ThermAvant Technologies Oscillating Heat Pipes (OHPs) Surpass 10 Million On-Orbit Operating Hours
COLUMBIA, Mo., April 30, 2026 — ThermAvant Technologies announced that its Oscillating Heat Pipe (OHP) thermal solutions have accumulated more than ten million hours of successful on-orbit operation. This milestone reflects the growing use of OHPs across commercial, defense, and government missions that require reliable passive thermal control.
ThermAvant’s oscillating heat pipes first flew in 2017 on the Air Force Research Laboratory (AFRL) ASETS II experiment aboard the X-37B spaceplane. Since then, the company has expanded into production programs with partners that include Maxar Technologies (since acquired by Intuitive Machines), AFRL, MDA Space, and commercial imaging constellations such as Albedo. ThermAvant has also delivered oscillating heat pipe radiators for a lunar surface rover application.
“This milestone belongs to our customers, most notably the Air Force Research Laboratory’s Space Vehicle’s Directorate who supported our first on-orbit OHPs in 2017,” said Joe Boswell, CEO of ThermAvant Technologies. “We are honored to have gained our customers’ trust in our team and the OHP technology to thermally control mission-critical spacecraft payloads.”
Oscillating heat pipes provide a reliable, high thermal conductance, and low density thermal-mechanical solution for high power density platforms. ThermAvant continues to expand its manufacturing capacity and design capabilities to support spacecraft, lunar mobility systems, defense and airborne platforms, and next-generation payloads across both space and terrestrial applications.
About ThermAvant Technologies
ThermAvant Tech is the world’s leading oscillating heat pipe (OHP) technology developer and product manufacturer. We embed the OHP technology into materials to maximize thermal-mechanical performance and minimize Size, Weight, Power plus Cost (SWaP-C). Technology firms and U.S. agencies use our OHPs to deliver more power in smaller packages without temperature constraints imposed by status quo heat transfer solutions. For more information, visit thermavant.com.