Tjernlund Products PS1503 Duct Airstat Positive Pressure Switch

The Tjernlund Products PS1503 Duct Airstat is a positive pressure switch that monitors airflow and activates in HVAC systems. When it senses an increased air pressure in the duct, it triggers connected components like exhaust fans, air cleaners, or booster fans. It is commonly used in heating and cooling systems for proper ventilation and confirms system operation. This is first an efficient energy control, second, an improvement in air distribution, and third approach to regulating indoor comfort. This is simple to install and durable in performance, making it a better choice for automating HVAC operations based on real-time duct pressure changes.