If you are seeing erratic shutdowns or short-cycling

F and supports a static pressure rating of 580 psig

with a total weight of 1

Is the Allanson 2721-668 compatible with older 2721-668SF models

Installation Flexibility: Includes alternate tappings and a 1-1/4" FIP connection to suit various boiler trim configurations

Lennox 97L01 Limit Switch THPU32HP7Y If you are seeing erraticThe 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