Engineered to detect the presence or absence of airflow

ensuring proper alignment with 1/2" or 3/4" NPT immersion wells

Key Benefits Precise Flow Control: The specialized A-port design provides equal percentage flow for linear heat output in coils

What are the symptoms of a failing Nordyne sequencer

a pneumatic relay or a different R-series model must be specified

Carrier HH19ZA156 Limit Switch 30067439-890 Engineered to detect the presenceThe Carrier HH19ZA156 Limit Switch is a critical OEM safety component designed for precise thermal regulation within Carrier, Bryant, and Payne furnace assemblies. This normally closed disc style switch acts as a primary high limit safeguard, engineered to interrupt the electrical circuit and terminate the heating cycle when internal plenum temperatures reach the 155F open setpoint. Once the heat exchanger cools to the 105F close setpoint, the