A system for providing and managing a laminar flow of filtered air for a clean room workspace has a blower for blowing air through a filter and over the work area. The velocity of air flowing through the filter is automatically controlled by a feedback loop wherein sensors enable the system to learn of a drop in flow, or even a flow rate that strays above a set point, and to then take action to change settings of the variable frequency drive which, in turn, vary the current to the motors causing a change in blower speed. The system's programmable logic control also provides for automatic recording and storing of data relating to the operating characteristics of the system, including the date and time that the operating characteristics were recorded. The recording may be done in a manner so as not to be editable by the system operator, which makes such record compliant with federal regulations.