GreenTrol’s OAC Series Outdoor Airflow and Temperature Controllers deliver precision control for rooftop air handlers, ducted outdoor air intakes, and systems without an airside economizer. Designed for flexibility and energy efficiency, these controllers optimize ventilation and improve indoor air quality in fan coils, DOAS, and makeup air systems.

With adjustable direct, standoff, or insertion mount probes, the OAC Series supports demand-controlled ventilation (DCV) using CO₂ sensors or occupancy counters.

Each controller ensures compliance with ASHRAE and LEED standards while compensating for damper hysteresis, filter loading, wind, and fan speed variations. Easy to configure and integrate with building automation systems, OAC controllers deliver unmatched performance for maintaining outdoor airflow setpoints, providing continuous verification, and improving comfort and energy efficiency.