About Acutherm™ Founded in 1978, Acutherm designs, manufactures and distributes a line of modular VAV systems and thermally powered VAV diffusers for use in HVAC systems. The company maintains its own R&D and manufacturing facilities in order to have total control over product quality. This policy has made Acutherm the decisive leader in the VAV diffuser market. A fully equipped testing laboratory staffed by graduate engineers sustains on-going research into product improvement and new product development, with all new products completely developed and fully tested before going into production.