Radiator Labs was born in a New York winter. Founders Dr. Marshall Cox and Professor John Kymissis developed their concept while Marshall was living in overheated graduate student housing. Through conversations with Professor Kymissis, the founders came up with the idea of the Cozy™, an insulated smart radiator cover that brings relief from overheating. After a year of initial testing in Marshall’s apartment, Marshall competed in – and won – the Grand Prize at – the MIT Clean Energy Prize. With $220,000 in prize money Radiator Labs was born!

Our Mission

The Radiator Labs mission is to eliminate overheating in steam heated buildings. By incorporating radiator-level control with real-time data visualization we can eliminate billions in wasted fuel, all while providing comfort and control to residents for the first time in a building’s history.


Marshall Cox

Founder and CEO

Marshall Cox earned his M.S. in materials science and engineering from Cornell University in May 2004 and his Ph.D. in electrical engineering from Columbia University in 2013. He is an alumnus of InSITE, an organization that helps early-stage startups refine their venture capital pitch presentations, and of the Startup Leadership Program (SLP), where he was a fellow in 2011-12 and a Program Leader in 2012-13. Marshall holds six U.S. patents and has published eight peer-reviewed papers in semiconductor devices, processing and inorganic synthetic chemistry.


Co-Founder and Technical Advisor

Ioannis (John) Kymissis is an electrical engineer who specializes in the processing and integration of thin film devices with sensing, actuation and optoelectronic properties. He obtained his S.B., M.Eng., and Ph.D. degrees from the Massachusetts Institute of Technology in 1998, 1999 and 2003, respectively. Following a post-doc at MIT he joined the faculty of Columbia University in the department of Electrical Engineering in 2006. John has co-authored more than 50 peer-reviewed publications, holds nine U.S. patents and is the author of a book entitled “Organic Field Effect Transistors: theory, fabrication, and characterization,” published by Springer in 2009.


John has won a number of awards for his work including the NSF CAREER award, the Interdigital Innovation Prize, the Vodaphone Americas Foundation Innovation prize, the MIT/DOE Clean Energy Prize, the IVMC Shoulders/Spindt/Grey award, and the IEEE EDS Paul Rappaport Award. John serves as the editor in chief of the Journal of the Society of Information display, and serves on the advisory boards for a number of small companies.


We’re proud to have been recognized for our innovative and efficient solution.