You may hear the inducer motor run

it features auto-changeover functionality and a keypad lockout to prevent unauthorized setpoint adjustments in commercial or multi-family environments

making it a standard choice for technicians managing hazardous area valve control in chemical processing and oil and gas facilities

making it the standard choice for field technicians performing high-stakes residential or commercial motor repairs

Resideo ZD22X18TZ Damper R-407A You may hear the inducerThe Resideo ZD22X18TZ is a professional grade parallel blade zone damper designed for precision airflow control in multi zone HVAC systems. Constructed with a heavy duty galvanized steel frame, this 22" W x 18" H unit utilizes a synchronous motor mounted on the 18 inch side for reliable operation under high static pressure conditions. As a power closed spring return open model, it ensures air delivery remains uninhibited in the event of a power loss,