Clean Room Controls

How Do Good Clean Room HVAC Controls Work?

Effective clean room controls manage air changes per hour, differential pressure between zones, temperature, humidity, and filtration in continuous, coordinated sequences that adapt to changes in occupancy and process load. Maintaining positive or negative pressure differentials between clean zones and adjacent spaces is critical; a failure that allows pressure equalization can contaminate an entire research environment. Air change rates are determined by ISO classification requirements, and our control programming enforces these rates continuously, not only during occupied hours. As a building automation company with regulated-environment project experience, we apply the commissioning standards that pharmaceutical and laboratory facilities require to every clean room installation. Temperature and humidity setpoints in clean rooms are tighter than those in standard commercial spaces, and DDC-based controls hold these setpoints through load changes, seasonal variation, and equipment cycling. HVAC control systems for clean room applications integrate with the facility’s broader building automation platform, providing centralized monitoring of every critical parameter. Our control sequences include alarm logic that alerts facility staff when any parameter approaches its limit, allowing intervention before the threshold is crossed.