Knowledge

Compare AC vs EC/DC motors in cleanroom FFUs—efficiency, speed control, noise, group control, and when EC payback typically lands in the 2–3 year range for large fleets.

Compare cleanroom FFU sizes—1175×575, 1175×1175, 1175×875, and 615×615—by ceiling grid, airflow, DC 310/400 fans, and ISO coverage needs.

An FFU (Fan Filter Unit) is a ceiling module with a fan and HEPA/ULPA filter that supplies filtered laminar air to cleanrooms. Learn how FFUs work, how they differ from AHUs, and what to compare when you select one.