Extended Probe Length: The 3

By integrating this genuine Johnston Controls HVAC part

always verify the specific temperature stamped on the existing switch to ensure the opening point matches 145°F

What is the thread size for the gas valve connection

Trane THT2440 Limit Switch Extended Probe Length: The 3Maintain peak operational safety in residential heating systems with the Trane THT2440 Limit Switch. This genuine Trane OEM replacement part is a critical safety component designed to monitor heat exchanger temperatures and prevent hazardous overheating conditions. As a high reliability 150 180F auto reset limit switch, it is engineered to automatically open the electrical circuit when internal plenum temperatures reach 180F, effectively shutting down