and AF-3 airflow switch series

or a failing blower motor before installing the new 180-degree limit control

this classic A-section belt features a 1/2-inch top width designed to sit flush within standard sheaves

the 620-406 features thermal fuse protection to prevent hazardous overheating during overcurrent events

Honeywell AT20A1123 Transformer and AF-3 airflow switch seriesAs an experienced HVAC technician, you know that finding a reliable power source for 24 VAC control systems is critical for minimizing callbacks. The Honeywell AT20A1123 Transformer is a heavy duty, step down solution engineered to convert 120V primary voltage to a stable 24V or 26. 5V secondary output. This 19VA HVAC transformer is a versatile "universal" component, frequently used to power thermostats, gas valves, and relays in residential and light