Lennox 97L01 Limit Switch 326070-701 Why is a hairpin cotter

Why is a hairpin cotter preferred over a standard split cotter

Common Questions & Technical Insights How do I set the deadband on the DDP-109-203M

Always verify if your local code requires a combination Temperature and Pressure (T&P) valve for your specific water heater application

or if you see visible corrosion or "welded" ports near the spark ignitor

The Emerson Alco 057631 is a high-performance AMC-24/50-60 solenoid coil engineered for rigorous HVACR duty cycles

Lennox 97L01 Limit Switch 326070-701 Why is a hairpin cotterThe Lennox 97L01 Limit Switch is a critical OEM replacement part engineered for precise thermal regulation in Lennox gas furnaces and air handlers. This L200 30F limit switch is designed to open the electrical circuit if the heat exchanger temperature exceeds its 200F setpoint, preventing mechanical failure and ensuring safe combustion cycles. With a 30F differential for automatic reset, it provides consistent high limit protection and prevents