ACE Thermal Systems designs, engineers, manufactures, and supports environmental control and thermal management systems for helicopters and fixed-wing general aviation aircraft. As part of Signia Aerospace, the company combines established expertise in aircraft air-control technologies with a collaborative, responsive approach for original equipment manufacturers and other customers. Its products include bleed-air systems and valves, vapor-cycle air-conditioning systems and components, cabin pressure control systems, electric and axial or centrifugal fans, temperature sensors and controllers, and air-distribution valves. ACE also provides system control and integration, cabin pressurization and heating solutions, STC kits, and product support.

From initial design and product development through production and in-service maintenance, ACE works with customers to address engineering challenges and support reliable aircraft performance. Its capabilities include qualification testing in facilities that simulate aircraft operating environments, technical documentation, and assistance with STC and PMA development toward FAA approval. The company also offers maintenance and repair through certified FAA and EASA Part 145 repair stations.