Direct Compatibility: Engineered as an exact functional equivalent to 18J2801 for seamless field installation

Unlike automatic limit controls

The 7-inch insert length is specific to the unit's airflow pattern

While it can handle various voltages

While the default rotation is 90 degrees

Carrier HH11AZ200 Vent Switch 340155-7024 Direct Compatibility: Engineered as anThe Carrier HH11AZ200 Vent Switch is a critical OEM replacement safety component designed to monitor airflow and temperature within the burner box of select Carrier, Bryant, and Payne furnaces. This single pole, single throw (SPST) switch operates as a normally closed safety device, engineered to interrupt the ignition sequence if it detects a temperature rise reaching 200F. Once tripped, the switch requires a manual reset, ensuring that a technician