Lennox 97L01 Limit Switch 326070-701 Extreme Durability: Forged brass construction

Extreme Durability: Forged brass construction and stainless steel diaphragms withstand rigorous cycling and high-pressure spikes

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

Check your blower wheel for debris to ensure an unobstructed load

Lennox 97L01 Limit Switch 326070-701 Extreme Durability: Forged brass constructionThe 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