Airflow Direction Incorporated’s BALL-IN-THE WALL & BAULIN-TUBE® indicator shows if your room is under proper negative or positive pressure. The ball rolls in the direction of airflow and incorporates a built-in failsafe feature.

We lead the evolution of control technology and humidification for air conditioning and refrigeration. Our products support customers with the most efficient energy savings solutions. Data-driven services through our IoT platform grant personalised valu