using genuine TB Woods inserts ensures the 30% torque increase and 3X service life improvements are realized

reducing diagnostic callbacks during critical cooling cycles

ensuring consistent performance in high-cycle environments

Because R-410A is a blend

it maintains stable regulation from full flow down to pilot flow

Carrier HH19ZH175 Limit Switch 320735-701 using genuine TB Woods insertsAs a field tech, you know that a failed safety circuit is the fastest way to a no heat call. The Carrier HH19ZH175 is a critical furnace high limit switch designed to protect the heat exchanger from thermal stress. This 175F limit switch features a normally closed (CO) configuration, meaning it stays shut during standard operation and opens the circuit at its 175 degree setpoint to kill the gas valve or heating elements. This specific HH19ZH175