Thermal Conversion Technology (TCT) is a Florida based corporation located in Jacksonville, Florida specializing in the manufacturing and integration of solar thermal systems. Incorporated in 1979, TCT is one of the oldest manufacturers of solar energy systems in the USA.

In 1984, TCT introduced the PROGRESSIVTUBE® solar heating system. Since that time, our systems have earned a reputation for high performance and durable design, assuring excellent economics during its 30-year design life.

PROGRESSIVTUBE® systems have been utilized worldwide in thousands of residential and commercial applications. PROGRESSIVTUBE® systems are "passive" solar heating systems manufactured to the exact quality standards from materials supplied by ISO certified suppliers.

Our staff has over four decades of solar manufacturing and customer service experience. TCT offers an international distributor and dealer network, a full complement of sales, marketing, and engineering support program services.

In August of 2003, TCT relocated into new, expanded facilities in the historic district of downtown Jacksonville, Florida at the I-95 and I-10 interchange. We are conveniently located for common carrier shipments, major rail facilities and a deep-water port are nearby, assuring low cost and timely shipments to our domestic and international customers .